Question

我想问一下点击按钮后如何添加textview和edittext？我添加textview和edittext的按钮是“Button addStaff”

这是我的代码：

_12_EventAssign.java

public class _12_EventAssign extends AppCompatActivity {

LinearLayout linearL;
TextView tvdept1;
EditText etdept1;
TextView tvheadofdept1;
EditText etheadofdept1;
View lineview;


Button addStaff;
LinearLayout staff;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity__12__event_assign);

    getSupportActionBar().setTitle("Add Event: Information");

   getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    linearL = (LinearLayout)findViewById(R.id.ev_assign_linearlay);
    tvdept1 = (TextView)findViewById(R.id.textv_dept1);
    etdept1 = (EditText)findViewById(R.id.editT_dept1);
    tvheadofdept1 = (TextView)findViewById(R.id.textv_headofdept1);
    etheadofdept1 = (EditText)findViewById(R.id.editT_headofdept1);
    lineview = findViewById(R.id.view1);

   // staff = (LinearLayout)findViewById(R.id.add_staff);


    addStaff = (Button)findViewById(R.id.btnaddstaff);
    addStaff.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            linearL.addView(tvdept1);
        }
    });
}
}

这是我的xml文件

activity__12__event_assign.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.ortegapatriciaa.enventer._12_EventAssign"
android:background="@color/colorWhite"
>


<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/ev_assign_linearlay"
        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:orientation="vertical"
            android:id="@+id/add_staff">

            <TextView
                android:id="@+id/textv_dept1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="20dp"
                android:layout_marginTop="25dp"
                android:text="Department"
                android:textColor="@color/colorBlack"
                android:textSize="23dp" />

            <EditText
                android:id="@+id/editT_dept1"
                android:layout_width="300dp"
                android:layout_height="40dp"
                android:layout_marginLeft="35dp"
                android:layout_marginTop="7dp"
                android:background="@color/colorGray"
                android:ems="10"
                android:inputType="textPersonName" />

            <TextView
                android:id="@+id/textv_headofdept1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="20dp"
                android:layout_marginTop="10dp"
                android:text="Head of the Department"
                android:textColor="@color/colorBlack"
                android:textSize="23dp" />

            <EditText
                android:id="@+id/editT_headofdept1"
                android:layout_width="300dp"
                android:layout_height="40dp"
                android:layout_marginLeft="35dp"
                android:layout_marginTop="7dp"
                android:background="@color/colorGray"
                android:ems="10"
                android:inputType="textPersonName" />

            <View
                android:id="@+id/view1"
                android:layout_width="330dp"
                android:layout_height="1dip"
                android:layout_marginLeft="15dp"
                android:layout_marginTop="20dp"
                android:background="@color/colorBlack" />

        </LinearLayout>

        <Button
            android:id="@+id/btnaddstaff"
            android:layout_width="130dp"
            android:layout_height="45dp"
            android:text="Add Staff"
            android:textStyle="bold"
            android:textAllCaps="false"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="20dp"
            android:layout_weight="1"
            android:height="60dp"
            android:background="@color/colorWhite"
            android:drawablePadding="6dp"
            android:drawableLeft="@drawable/ic_person_add_black_24dp"
            android:gravity="left|center"
            android:padding="6dp"
            android:textColor="#000"
            android:textSize="18dp"
            android:layout_marginTop="5dp"
            />

        <Button
            android:id="@+id/btnsave"
            android:layout_width="250dp"
            android:layout_height="40dp"
            android:text="Save"
            android:textAllCaps="false"
            android:textSize="22dp"
            android:background="@color/buttonColor"
            android:layout_gravity="center"
            android:layout_marginTop="20dp"
            android:layout_marginBottom="10dp"
            />


    </LinearLayout>
</ScrollView>

我希望你能帮助我。谢谢！

Answer 1

这完美地运作......

您可以根据需要更改 lparams

LinearLayout linearLayout =(LinearLayout)findViewById(R.id.yourLinearLayoutID);
Button yourButton = (Button)findViewById(R.id.yourButtonID);

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

   LayoutParams layoutparam = new LayoutParams(
       LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

   TextView textview=new TextView(this);
     textview.setLayoutParams(lparams);      
     textview.setText("Your Text Here");     //For TextView
     this.linearLayout.addView(textView);

   EditText editText=new EditText(this);
     editText.setLayoutParams(lparams);
     editText.setText("Your Text Here");    //For EditText
     this.linearLayout.addView(editText);
 }
});

Answer 2

您无法将现有视图添加到布局。您必须创建新的TextView并添加：

    addStaff.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            TextView tv = new TextView(getApplicationContext());
            tv.setBackgroundColor(Color.GRAY);
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 100);
            linearL.addView(tv, params);
        }
    });

Answer 3

试试这种方式

addStaff = (Button)findViewById(R.id.btnaddstaff);
  addStaff.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        TextView tv = new TextView(this)
        tv.setText("yourtext")
        EditText et = new Edittext(this)
        et.setText("yourtext")
        linearL.addView(tv);
        linearL.addView(et);

    }
});

单击按钮后如何添加textview和edittext？

3 个答案: