Question

嘿，我有像绿色指示键盘的网格视图按钮，如果我点击其中一个变成红色反正我有4个TextViews所以我想按下一个数字文本它在textview1然后第二个数字转到txt2第三个到txt3第四个到txt4但txt4必须是可以改变的，如果我按下另一个数字自动改变，重要的是我不能使用相同的数字例如在txt1我按下数字1按钮变红所以我不能使用它在txt2,3,4直到我从txt1删除它看看我的图片如果有人想要代码我很乐意把它放在

（以及如何在一个数字后自动跳转到下一个textview）

MainActivity.java这有助于我编辑TextView

所需的文本

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    txt1 = (TextView)findViewById(R.id.txt1);
    editText = (EditText) findViewById(R.id.editText);

    b1 = (Button) findViewById(R.id.n1);
    b2 = (Button) findViewById(R.id.n2);
    b3 = (Button) findViewById(R.id.n3);
    b4 = (Button) findViewById(R.id.n4);
    b5 = (Button) findViewById(R.id.n5);
    b6 = (Button) findViewById(R.id.n6);
    b7 = (Button) findViewById(R.id.n7);
    b8 = (Button) findViewById(R.id.n8);
    b9 = (Button) findViewById(R.id.n9);
    b0 = (Button) findViewById(R.id.n0);
    ent = (Button) findViewById(R.id.enter);
    clr = (Button) findViewById(R.id.Clear);
    buttonEffect(b0);
    buttonEffect(b1);
    buttonEffect(b2);
    buttonEffect(b3);
    buttonEffect(b4);
    buttonEffect(b5);
    buttonEffect(b6);
    buttonEffect(b7);
    buttonEffect(b8);
    buttonEffect(b9);




/*    b1.setVisibility(View.INVISIBLE);
    b2.setVisibility(View.INVISIBLE);
    b3.setVisibility(View.INVISIBLE);
    b4.setVisibility(View.INVISIBLE);
    b5.setVisibility(View.INVISIBLE);
    b6.setVisibility(View.INVISIBLE);
    b7.setVisibility(View.INVISIBLE);
    b8.setVisibility(View.INVISIBLE);
    b9.setVisibility(View.INVISIBLE);
    b0.setVisibility(View.INVISIBLE);
    ent.setVisibility(View.INVISIBLE);
    clr.setVisibility(View.INVISIBLE);*/

        //for default keyboard don't appear
    editText.setShowSoftInputOnFocus(false);

    editText.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            b1.setVisibility(View.VISIBLE);
            b2.setVisibility(View.VISIBLE);
            b3.setVisibility(View.VISIBLE);
            b4.setVisibility(View.VISIBLE);
            b5.setVisibility(View.VISIBLE);
            b6.setVisibility(View.VISIBLE);
            b7.setVisibility(View.VISIBLE);
            b8.setVisibility(View.VISIBLE);
            b9.setVisibility(View.VISIBLE);
            b0.setVisibility(View.VISIBLE);
            ent.setVisibility(View.VISIBLE);
            clr.setVisibility(View.VISIBLE);
            return false;
        }
    });





    editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            textContainer = s.toString();
            prevLength = s.length();
        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            editText.setSelection(editText.getText().length());

        }

        @Override
        public void afterTextChanged(Editable s) {
            length = s.length();
            if (!textContainer.isEmpty()) {
                if (s.length() > 1) {
                    if (prevLength < length) {
                        if (!textContainer.contains(s.toString().subSequence(length - 1, length))) {
                            length = s.length();
                        } else {
                            editText.getText().delete(length - 1, length);
                        }
                    }
                }
            } else {
                textContainer = s.toString();
            }


        }
    });




    b0.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           editText.setText(editText.getText().insert(editText.getText().length(), "0"));
            b0.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String zero = "0";
                txt1.setText(zero);

        }
    });


    b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "1"));
            b1.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));

            String one = "1";
        txt1.setText(one);

        }
    });

    b2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "2"));
            b2.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String two = "2";
            txt1.setText(two);

        }
    });


    b3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "3"));
            b3.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String three = "3";
            txt1.setText(three);

        }
    });


    b4.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "4"));
            b4.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String four = "4";
            txt1.setText(four);

        }
    });


    b5.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "5"));
            b5.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String five = "5";
            txt1.setText(five);

        }
    });


    b6.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "6"));
            b6.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String six = "6";
            txt1.setText(six);

        }
    });


    b7.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "7"));
            b7.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String seven = "7";
            txt1.setText(seven);

        }
    });


    b8.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText(editText.getText().insert(editText.getText().length(), "8"));
            b8.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String eight = "8";
            txt1.setText(eight);

        }
    });


    b9.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            editText.setText(editText.getText().insert(editText.getText().length(), "9"));

            b9.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
            String nine = "9";
            txt1.setText(nine);
        }
    });


    ent.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

        }
    });


    clr.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            clr.setPressed(true);
            int length = editText.getText().length();
            if (length > 0) {
                editText.getText().delete(length - 1, length);
            }


            if (editText.getText().toString().contains("0")) {
                b0.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b0.setEnabled(false);

            }
            else{
                b0.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b0.setEnabled(true);

            }
            if (editText.getText().toString().contains("1")) {
                b1.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b1.setEnabled(false);

            }
            else{
                b1.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b1.setEnabled(true);

            }
            if (editText.getText().toString().contains("2")) {
                b2.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b2.setEnabled(false);

            }
            else{
                b2.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b2.setEnabled(true);

            }
            if (editText.getText().toString().contains("3")) {
                b3.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b3.setEnabled(false);

            }
            else{
                b3.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b3.setEnabled(true);

            }
            if (editText.getText().toString().contains("4")) {
                b4.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b4.setEnabled(false);

            }
            else{
                b4.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b4  .setEnabled(true);

            }
            if (editText.getText().toString().contains("5")) {
                b5.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b5.setEnabled(false);

            }
            else{
                b5.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b5.setEnabled(true);

            }
            if (editText.getText().toString().contains("6")) {
                b6.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b6.setEnabled(false);

            }
            else{
                b6.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b6.setEnabled(true);

            }
            if (editText.getText().toString().contains("7")) {
                b7.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b7.setEnabled(false);

            }
            else{
                b7.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b7.setEnabled(true);

            }
            if (editText.getText().toString().contains("8")) {
                b8.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b8.setEnabled(false);

            }
            else{
                b8.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b8.setEnabled(true);

            }
            if (editText.getText().toString().contains("9")) {
                b9.setBackgroundDrawable(getResources().getDrawable(R.drawable.redww));
                b9.setEnabled(false);

            }
            else{

                b9.setBackgroundDrawable(getResources().getDrawable(R.drawable.greenww));
                b9.setEnabled(true);
            }
        }
    });


}

public static void buttonEffect(View button){
    button.setOnTouchListener(new View.OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN: {
                    v.getBackground().setColorFilter(0xe0ffffff, PorterDuff.Mode.SRC_ATOP);
                    v.invalidate();
                    break;
                }

                case MotionEvent.ACTION_UP: {
                    v.getBackground().clearColorFilter();
                    v.invalidate();
                    break;
                }
            }

            return false;
        }
    });
}





@Override
public void onBackPressed() {
    b1.setVisibility(View.INVISIBLE);
    b2.setVisibility(View.INVISIBLE);
    b3.setVisibility(View.INVISIBLE);
    b4.setVisibility(View.INVISIBLE);
    b5.setVisibility(View.INVISIBLE);
    b6.setVisibility(View.INVISIBLE);
    b7.setVisibility(View.INVISIBLE);
    b8.setVisibility(View.INVISIBLE);
    b9.setVisibility(View.INVISIBLE);
    b0.setVisibility(View.INVISIBLE);
    ent.setVisibility(View.INVISIBLE);
    clr.setVisibility(View.INVISIBLE);

}

@Override
public boolean onTouchEvent(MotionEvent event) {
    b1.setVisibility(View.INVISIBLE);
    b2.setVisibility(View.INVISIBLE);
    b3.setVisibility(View.INVISIBLE);
    b4.setVisibility(View.INVISIBLE);
    b5.setVisibility(View.INVISIBLE);
    b6.setVisibility(View.INVISIBLE);
    b7.setVisibility(View.INVISIBLE);
    b8.setVisibility(View.INVISIBLE);
    b9.setVisibility(View.INVISIBLE);
    b0.setVisibility(View.INVISIBLE);
    ent.setVisibility(View.INVISIBLE);
    clr.setVisibility(View.INVISIBLE);
    return    super.onTouchEvent(event);

}

XML

         <?xml version="1.0" encoding="utf-8"?>
   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.mike.keyboardtest.MainActivity">



<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="350dp"
    android:gravity="bottom"
    android:orientation="vertical"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:id="@+id/linearLayout">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/button_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:clickable="true"

            android:minHeight="80dp"
            android:text="1"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:clickable="true"

            android:minHeight="80dp"
            android:text="2"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:clickable="true"

            android:minHeight="80dp"
            android:text="3"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#112"
            android:minHeight="80dp"
            android:text="clear"
            android:clickable="true"

            android:textColor="@color/colorPrimaryDark"
            android:textSize="25sp"
            android:textStyle="bold"
            android:id="@+id/button_clear" />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="2dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/button_4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:clickable="true"

            android:minHeight="80dp"
            android:text="4"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:clickable="true"

            android:minHeight="80dp"
            android:text="5"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:minHeight="80dp"
            android:clickable="true"

            android:text="6"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_enter"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#ccc"
            android:minHeight="80dp"
            android:clickable="true"

            android:text="enter"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="25sp"
            android:textStyle="bold" />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="2dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/button_7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:minHeight="80dp"
            android:clickable="true"

            android:text="7"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:minHeight="80dp"
            android:clickable="true"

            android:text="8"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:minHeight="80dp"
            android:clickable="true"

            android:text="9"

            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/button_0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:background="@drawable/button_selector"
            android:minHeight="80dp"
            android:clickable="true"
            android:text="0"
            android:textColor="#333"
            android:textSize="25sp" />

    </LinearLayout>

</LinearLayout>

<LinearLayout
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:weightSum="4"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp">

    <TextView
        android:id="@+id/text_1"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:background="@drawable/greenww"
        android:layout_weight="1"/>

    <TextView
        android:id="@+id/text_2"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:background="@drawable/greenww"
        android:layout_weight="1"
        android:layout_marginRight="5dp"
        android:layout_marginLeft="5dp"/>
    <TextView
        android:id="@+id/text_3"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:background="@drawable/greenww"
        android:gravity="center"
        android:layout_weight="1"
        android:layout_marginRight="5dp"/>
    <TextView
        android:id="@+id/text_4"
        android:layout_width="0dp"
        android:background="@drawable/greenww"
        android:layout_height="60dp"
        android:gravity="center"
        android:layout_weight="1"/>


</LinearLayout>

Answer 1

int click = 0;
TextView tv [] = new TextView[4];

的onCreate：

    tv[0] = (TextView) findViewById(R.id.tv1);
    tv[1] = (TextView) findViewById(R.id.tv2);
    tv[2] = (TextView) findViewById(R.id.tv3);
    tv[3] = (TextView) findViewById(R.id.tv4);

的onClick：

    if(click <= 3) {
        switch (v.getId()){
            case R.id.n1:
                number  = "1";
                clickCount.add(0);
                btn[0].setEnabled(false);
            break;
        }
        setTv(number, click);
        click++;
    }

梅托德：

public void setTv(String str, int click){

    switch (click){
        case 0:
            tv[0].setText(str);
            break;

        case 1:
            tv[1].setText(str);
            break;
        case 2:
            tv[2].setText(str);
            break;
        case 3:
            tv[3].setText(str);
            break;

    }
}

删除按钮：

    if(click != 0) {
       tv[--click].setText("");
    }

xml文件：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin">



<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="400dp"
    android:gravity="bottom"
    android:orientation="vertical"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:focusable="true"
    android:focusableInTouchMode="true">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/n1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="1"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="2"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="3"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#112"
            android:minHeight="80dp"
            android:text="clear"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="25sp"
            android:textStyle="bold"
            android:id="@+id/Clear" />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="2dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/n4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="4"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="5"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="6"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/enter"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#ccc"
            android:minHeight="80dp"
            android:text="enter"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="25sp"
            android:textStyle="bold" />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="2dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/n7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="7"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="8"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_marginRight="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="9"
            android:textColor="#333"
            android:textSize="25sp" />

        <Button
            android:id="@+id/n0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="2dp"
            android:layout_weight="1"
            android:minHeight="80dp"
            android:text="0"
            android:textColor="#333"
            android:textSize="25sp" />

    </LinearLayout>

</LinearLayout>

<LinearLayout
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:weightSum="4"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp">

    <TextView
        android:id="@+id/tv1"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:background="@drawable/tvstroke"
        android:layout_weight="1"/>

    <TextView
        android:id="@+id/tv2"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:background="@drawable/tvstroke"
        android:layout_weight="1"
        android:layout_marginRight="5dp"
        android:layout_marginLeft="5dp"/>
    <TextView
        android:id="@+id/tv3"
        android:layout_width="0dp"
        android:layout_height="60dp"
        android:background="@drawable/tvstroke"
        android:gravity="center"
        android:layout_weight="1"
        android:layout_marginRight="5dp"/>
    <TextView
        android:id="@+id/tv4"
        android:layout_width="0dp"
        android:background="@drawable/tvstroke"
        android:layout_height="60dp"
        android:gravity="center"
        android:layout_weight="1"/>


</LinearLayout>


</RelativeLayout>

TextView笔划：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <stroke android:width="1dp"
        android:color="@color/colorPrimary"/>
</shape>

主要活动：

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

int click = 0;
TextView tvKeyBoard;
TextView tv [] = new TextView[4];

Button btn[] = new Button[10];
ArrayList<Integer> clickCount = new ArrayList<>();

String fullNamber = "";

Button del, clear;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    del = (Button) findViewById(R.id.enter);
    clear = (Button) findViewById(R.id.Clear);

    tv[0] = (TextView) findViewById(R.id.tv1);
    tv[1] = (TextView) findViewById(R.id.tv2);
    tv[2] = (TextView) findViewById(R.id.tv3);
    tv[3] = (TextView) findViewById(R.id.tv4);

    btn[0] = (Button) findViewById(R.id.n1);
    btn[1] = (Button) findViewById(R.id.n2);
    btn[2] = (Button) findViewById(R.id.n3);
    btn[3] = (Button) findViewById(R.id.n4);
    btn[4] = (Button) findViewById(R.id.n5);
    btn[5] = (Button) findViewById(R.id.n6);
    btn[6] = (Button) findViewById(R.id.n7);
    btn[7] = (Button) findViewById(R.id.n8);
    btn[8] = (Button) findViewById(R.id.n9);
    btn[9] = (Button) findViewById(R.id.n0);

    for (Button b : btn){
        b.setOnClickListener(this);
    }



    del.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if(clickCount.size() != 0) {
                btn[clickCount.get(clickCount.size()-1)].setEnabled(true);
                clickCount.remove(clickCount.size()-1);
            }

            if(click != 0) {
                tv[--click].setText("");
            }

        }
    });

    clear.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            for (int i = 0; i < clickCount.size(); i++ ){
                btn[clickCount.get(i)].setEnabled(true);
            }
            clickCount.clear();
        }
    });






}

@Override
public void onClick(View v) {

    String number = "";

 if(click <= 3) {
    switch (v.getId()){
        case R.id.n1:
            number  = "1";
            clickCount.add(0);
            btn[0].setEnabled(false);
            break;
        case R.id.n2:
            number  = "2";
            clickCount.add(1);
            btn[1].setEnabled(false);
            break;

        case R.id.n3:
            number  = "3";
            clickCount.add(2);
            btn[2].setEnabled(false);
            break;
        case R.id.n4:
            number  = "4";
            clickCount.add(3);
            btn[3].setEnabled(false);
            break;
        case R.id.n5:
            number  = "5";
            clickCount.add(4);
            btn[4].setEnabled(false);
            break;

        case R.id.n6:
            number  = "6";
            clickCount.add(5);
            btn[5].setEnabled(false);
            break;

        case R.id.n7:
            number  = "7";
            clickCount.add(6);
            btn[6].setEnabled(false);
            break;
        case R.id.n8:
            number  = "8";
            clickCount.add(7);
            btn[7].setEnabled(false);
            break;

        case R.id.n9:
            number  = "9";
            clickCount.add(8);
            btn[8].setEnabled(false);
            break;

        case R.id.n0:
            number  = "0";
            clickCount.add(9);
            btn[9].setEnabled(false);
            break;


    }


        setTv(number, click);
        click++;
    }



}

@Override
public void onBackPressed() {


    if(del.isEnabled()){
        for (Button b : btn){
            b.setVisibility(View.INVISIBLE);

        }
        del.setVisibility(View.INVISIBLE);
        clear.setVisibility(View.INVISIBLE);
    }else
        super.onBackPressed();

}

public void setTv(String str, int count){

    switch (count){
        case 0:
            tv[0].setText(str);
            break;

        case 1:
            tv[1].setText(str);
            break;
        case 2:
            tv[2].setText(str);
            break;
        case 3:
            tv[3].setText(str);
            break;

    }

}

}

Answer 2

为简洁起见，我只选择了五个按钮。

<强> MainActivity

public class MainActivity extends Activity {

    List<String> values = new ArrayList<>();
    String[] values = new String[]{" ", " ", " ", " "};
    TextView textView[] = new TextView[4];
    int size = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout);
        textView[0] = (TextView) findViewById(R.id.text_1);
        textView[1] = (TextView) findViewById(R.id.text_2);
        textView[2] = (TextView) findViewById(R.id.text_3);
        textView[3] = (TextView) findViewById(R.id.text_4);
        // bind your buttons views here
        // for ex:
        button0 = (Button) findViewById(R.id.button_0);
        // so on up to button 9
        // ...
        //Also bind views for Clear button and enter
    }

    // This method is set statically in xml file check below
        public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button_0:
                setText(0);
                button0.setEnabled(false);
                break;
            case R.id.button_1:
                setText(1);
                button1.setEnabled(false);
                break;
            case R.id.button_2:
                setText(2);
                button2.setEnabled(false);
                break;
            case R.id.button_3:
                setText(3);
                button3.setEnabled(false);
                break;
            case R.id.button_4:
                setText(4);
                button4.setEnabled(false);
                break;
            case R.id.button_clear:
                if (size == 0) {
                    return;
                }
                String numberToCleared = values[size - 1];
                clearButton(Integer.parseInt(numberToCleared));
                size--;
                values[size] = " ";
                bindText();
                break;
            case R.id.button_enter:
                //do what you want to do here
                break;
        }
    }

    private void clearButton(int number) {
        switch (number) {
            case 0:
                button0.setEnabled(true);
                break;
            case 1:
                button1.setEnabled(true);
                break;
            case 2:
                button2.setEnabled(true);
                break;
            case 3:
                button3.setEnabled(true);
                break;
            case 4:
                button4.setEnabled(true);
                break;
        }
    }

    public void bindText() {
        for (int i = 0; i < 4; i++) {
            textView[i].setText(values[i]);
        }
    }

    public void setText(int number) {
        if (size == 4) {
            clearButton(Integer.parseInt(values[3]));
            size--;
        }
        values[size] = String.valueOf(number);
        size++;
        bindText();
    }
}

<强> layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/text_1"
            android:layout_width="24dp"
            android:layout_height="wrap_content"
            android:padding="4dp"/>

        <TextView
            android:id="@+id/text_2"
            android:layout_width="24dp"
            android:layout_height="wrap_content"
            android:padding="4dp"/>

        <TextView
            android:id="@+id/text_3"
            android:layout_width="24dp"
            android:layout_height="wrap_content"
            android:padding="4dp"/>

        <TextView
            android:id="@+id/text_4"
            android:layout_width="24dp"
            android:layout_height="wrap_content"
            android:padding="4dp"/>

    </LinearLayout>


    <GridLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:columnCount="3"
        android:orientation="vertical"
        android:rowCount="2">


        <Button
            android:id="@+id/button_0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="0"/>


        <Button
            android:id="@+id/button_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="1"/>

        <Button
            android:id="@+id/button_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="2"/>

        <Button
            android:id="@+id/button_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="3"/>

        <Button
            android:id="@+id/button_4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="4"/>

        <Button
            android:id="@+id/button_clear"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="Clear"/>

        <Button
            android:id="@+id/button_enter"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_selector"
            android:onClick="onClick"
            android:text="Enter"/>
    </GridLayout>
</LinearLayout>

button_selector.xml 将其放在可绘制文件夹中。

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/green" android:state_enabled="true"/>
    <item android:drawable="@color/red" android:state_enabled="false"/>
    <item android:drawable="@color/green"/>
</selector>

逻辑（OP要求它） values数组存储了应该在TextViews中显示的数字。

按下按钮时，值数组将在setText（）方法中更新。

当按下清除时，会发生这种情况 -

        if (size == 0) {
            return;  // if size is 0 do nothing.
        }
        String numberToCleared = values[size - 1];
        //You've to clear the button color. So, get the last value in array
        //and send it to clearButton() function.
        clearButton(Integer.parseInt(numberToCleared));
        //remove the number from values array and decrement size
        size--; 
        values[size] = " ";
        bindText();
        break;

如何在多个TextView中输入数字？

2 个答案: