Question

如果通过按钮点击检查AppCompatRadioButton，我会尝试获取文本这是布局：

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

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="status"
                android:textColor="#f2ff00" />

            <RadioGroup
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal">

                <android.support.v7.widget.AppCompatRadioButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:id="@+id/radioButtonFull"
                    android:text="full"
                    android:textColor="#f2ff00"
                    app:buttonTint="#ffffff" />

                <android.support.v7.widget.AppCompatRadioButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:id="@+id/radioButtonEnd"
                    android:textColor="#f2ff00"
                    app:buttonTint="#28ff1c"/>

            </RadioGroup>

            <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/buttonSearch"
                android:textColor="#ffffff"/>

        </LinearLayout>

这是我的代码：

AppCompatRadioButton rb_full = (AppCompatRadioButton)view.findViewById(R.id.radioButtonFull);
    rb_full.setText("This is full !");
    AppCompatRadioButton rb_end = (AppCompatRadioButton)view.findViewById(R.id.radioButtonEnd);
    rb_end.setText("This is end !");
    String status;
    if(rb_full.isChecked()){
        status = "Full, please delete something";
    }
    if(rb_end.isChecked()){
        status = "End, please select one of it";
    }

    bt_Search = (Button) view.findViewById(R.id.buttonSearch);
    bt_Search.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v) {
            Toast.makeText(getActivity().getApplicationContext(), status, Toast.LENGTH_SHORT).show();
        }
    });

如果通过按钮点击检查AppCompatRadioButton，我会尝试获取字符串状态但是当点击按钮时，Toast什么也没显示如何解决？

Answer 1

您需要实现OnClickListener来更改变量Status中的值。你可以用两种方式做到这一点：

1）在无线电组本身上实现OnCheckedChangeListener：

RadioGroup radioGroup = (RadioGroup) findViewById(R.id.yourRadioGroup);    
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
    {
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            // checkedId is the RadioButton selected
            if(checkedId == R.id.radioButtonFull)
                status = "Full, please delete something";
            else
                status = "End, please select one of it";
        }
    });

2）第二种方法是为单选按钮实现OnClickListener，但这将是冗余代码。所以我建议你只使用第一种方法。

Answer 2

<RadioGroup
            android:id="@+id/rg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <android.support.v7.widget.AppCompatRadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/radioButtonFull"
                android:text="full"
                android:checked="true"
                android:textColor="#f2ff00"
                app:buttonTint="#ffffff" />

            <android.support.v7.widget.AppCompatRadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/radioButtonEnd"
                android:textColor="#f2ff00"
                app:buttonTint="#28ff1c"/>

</RadioGroup>

JAVA

 final RadioGroup rg  = (RadioGroup) findViewById(R.id.rg);  
    bt_Search.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v) {
            int selectedId = rg.getCheckedRadioButtonId();
            if(selectedId == R.id.radioButtonFull)
            status = "Full, please delete something";
            else
            status = "End, please select one of it";
            Toast.makeText(getActivity().getApplicationContext(), status, Toast.LENGTH_SHORT).show();
        }
    });

Answer 3

您可以通过这种方式点击按钮获取选定的单选按钮值，然后选中this

public class MyActivity extends Activity {

  private RadioGroup radioSexGroup;
  private RadioButton radioSexButton;
  private Button btnDisplay;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    addListenerOnButton();

  }

  public void addListenerOnButton() {

    radioSexGroup = (RadioGroup) findViewById(R.id.radioSex);
    btnDisplay = (Button) findViewById(R.id.btnDisplay);

    btnDisplay.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

                // get selected radio button from radioGroup
            int selectedId = radioSexGroup.getCheckedRadioButtonId();

            // find the radiobutton by returned id
                radioSexButton = (RadioButton) findViewById(selectedId);

            Toast.makeText(MyActivity.this,
                radioSexButton.getText(), Toast.LENGTH_SHORT).show();

        }

    });

  }
}

如果检查，Android AppCompatRadioButton获取文本

3 个答案: