Android: Button click event

2019-01-24 04:46发布

I have 2 buttons in my xml file with RelativeLayout. In my class I have extended Dialog & implemetned OnClickListener and also added OnClick(View v) method. But somehow the onClick code is never executed when the button is clicked. Can anyone help me find the problem with my code :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="vertical"  
android:padding="10px">

    ......
    <Button android:id="@+id/saveBtn_settingDlg" android:layout_width="wrap_content" 
    android:layout_height="wrap_content" android:layout_below="@+id/editText1"
    android:layout_marginLeft="10px" android:text="Save" />

    <Button android:id="@+id/closeBtn_settingDlg" android:layout_width="wrap_content" android:layout_height="wrap_content" 
      android:text="Close" android:layout_alignBaseline="@+id/saveBtn_setting" 
      android:layout_toRightOf="@+id/saveBtn_setting" android:onClick="CloseDialog"  />

Class

 public class SettingDialog extends Dialog implements OnClickListener {

private Button btn_save, btn_close;

           // In Constructor
    btn_save = (Button) findViewById(R.id.saveBtn_settingDlg);
    btn_close = (Button) findViewById(R.id.closeBtn_settingDlg);
    btn_save.setOnClickListener(this);
    btn_close.setOnClickListener(this);

@Override
public void onClick(View v) {
    if (v == btn_save) 
        SaveSettings();
    else if (v == btn_close)
        CloseDialog();

    return;
}

private void CloseDialog() {
    disposeAll();
    this.dismiss();
}

public void CloseBtnClicked(View v) {
    CloseDialog();
}

In xml for close btn I tried CloseBtnClicked also but no difference and I get an UnexpectedError message and application shuts down. Somehow the event is only not activated in any ways. And also on adding onClick to closebtn the button is now shown on the top-left of the screen and lost the actual location of it.

Calling SettingDialog from Activity class :

    private void OpenSettingDialog() {

    AlertDialog.Builder ad = new AlertDialog.Builder(this);
    ad.setIcon(R.drawable.ic_dialog_small);

    View inflatedView = LayoutInflater.from(this).inflate(R.layout.settings_dialog, null); 
    ad.setView(inflatedView);

    AlertDialog adlg = ad.create();     
    adlg.show();

}

Can anyone help me know the reason for this problem and how do I solve it. I am a newbie to Android.

Thanks

8条回答
一纸荒年 Trace。
2楼-- · 2019-01-24 05:03

Button Name is MyButton.it's working.

   MyButton.setOnClickListener(new OnClickListener() 
{
 @Override          
 public void onClick(View v) 
 {              
     mytextView.setText("Messi");           
  }         
});
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Viruses.
3楼-- · 2019-01-24 05:05

just Replace Your code From this code

@Override
public void onClick(View v) {

    if (v == btn_save) 
        SaveSettings();
    else if (v == btn_close)
        CloseDialog();

    return;
}

to

@Override
public void onClick(View v) {

    switch(v.getId()){
            case R.id.saveBtn_settingDlg:
                SaveSettings();

            break;
            case R.id.closeBtn_settingDlg:
                CloseDialog();
            break;
        }
}
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闹够了就滚
4楼-- · 2019-01-24 05:06
android:onClick="CloseDialog"

of Button in layout for Dialog searches the method in Activity class not in Dialog

define your method in Activity which is calling Dialog or remove android:onClick="CloseDialog" from tag and set OnClickListener from Java code in Dialog class.

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家丑人穷心不美
5楼-- · 2019-01-24 05:14

You should turn to use the simplest way that I always do as below:

@Override
public void onCreate(Bundle savedInstanceState) {
    button1.setOnClickListener(onClickListener);
    button2.setOnClickListener(onClickListener);
    button3.setOnClickListener(onClickListener);
}

private OnClickListener onClickListener = new OnClickListener() {
    @Override
    public void onClick(final View v) {
        switch(v.getId()){
            case R.id.button1:
                 //DO something
            break;
            case R.id.button2:
                 //DO something
            break;
            case R.id.button3:
                 //DO something
            break;
        }
    }
};
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萌系小妹纸
6楼-- · 2019-01-24 05:19

Try this, I Hope it's of help

 if(v.getId()==R.id.saveBtn_settingDlg)
       SaveSettings();

        else if (v.getId()==R.id.closeBtn_settingDlg)

            CloseDialog();
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爷、活的狠高调
7楼-- · 2019-01-24 05:21

i think you should compare the view id's not views

if (v == btn_save)

to

   if (v.getId() == btn_save.getId())
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