如何保持DialogPreference onClick

我想弄清楚如何在我的自定义DialogPreference，点击positive_button，我可以执行检查，如果它无效，然后将对话框打开。如果它是有效的，我要取消的定制DialogPreference如何保持DialogPreference onClick

以下是我目前拥有的，但如果它工作与否没有关系，它会关闭该对话框的onclick

public class PasswordDialogPreference extends DialogPreference { 

    TextView tvOldPassword; 
    TextView tvNewPassword; 
    TextView tvConfirmPassword; 

    EditText etOldPassword; 
    EditText etNewPassword; 
    EditText etConfirmPassword; 

    SharedPreferences sharedPrefs; 
    SharedPreferences.Editor editor; 

    public PasswordDialogPreference(Context context, AttributeSet attrs) { 
     super(context, attrs); 

     setDialogLayoutResource(R.layout.password_dialog_preference); 
     setPositiveButtonText(android.R.string.ok); 
     setNegativeButtonText(android.R.string.cancel); 
     setDialogIcon(null); 
     setPersistent(false); 
    } 

    @Override 
    public void onBindDialogView(View view) { 
     tvOldPassword = (TextView) view.findViewById(R.id.tvOldPassword); 
     tvNewPassword = (TextView) view.findViewById(R.id.tvNewPassword); 
     tvConfirmPassword = (TextView) view.findViewById(R.id.tvConfirmPassword); 

     etOldPassword = (EditText) view.findViewById(R.id.etOldPassword); 
     etNewPassword = (EditText) view.findViewById(R.id.etNewPassword); 
     etConfirmPassword = (EditText) view.findViewById(R.id.etConfirmPassword); 

     sharedPrefs = PreferenceManager 
       .getDefaultSharedPreferences(getContext()); 


     if (sharedPrefs.getString("prefPasscode", "").length() < 4) { 
      tvOldPassword.setVisibility(View.GONE); 
      etOldPassword.setVisibility(View.GONE); 
     } 
     super.onBindDialogView(view); 
    } 

    @Override 
    protected void onDialogClosed(boolean positiveResult) { 
     super.onDialogClosed(positiveResult); 
     persistBoolean(positiveResult); 
    } 

    @Override 
    protected void onPrepareDialogBuilder(AlertDialog.Builder builder) { 
     super.onPrepareDialogBuilder(builder); 
     //builder.setNegativeButton(null, null); 

     builder.setPositiveButton(AlertDialog.BUTTON_POSITIVE, new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       sharedPrefs = PreferenceManager 
         .getDefaultSharedPreferences(getContext()); 

       if (etNewPassword.getText().toString().equals(etConfirmPassword.getText().toString())) { 
        editor.putString("prefPasscode", etConfirmPassword.getText().toString()); 
        editor.commit(); 
        Toast.makeText(getContext(), "Pin saved.", 
          Toast.LENGTH_SHORT 
        ).show(); 
       } else if (etNewPassword.getText().toString().length() != 4) { 
        Toast.makeText(getContext(), "Pin must be 4 digits.", 
          Toast.LENGTH_SHORT 
        ).show(); 
       } else if (!etNewPassword.getText().toString().equals(etConfirmPassword.getText().toString())) { 
        Toast.makeText(getContext(), "Pin does not match.", 
          Toast.LENGTH_SHORT 
        ).show(); 
       } 
      } 
     }); 
    } 

}

来源

2014-07-23 Rob

尝试重写showDialog(Bundle)方法获得实际的AlertDialog实例并将onClickListener设置为正按钮：

@Override 
protected void showDialog(Bundle state) { 
    super.showDialog(state); 

    final AlertDialog dlg = (AlertDialog) getDialog(); 
    dlg.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      if (needToClose) { 
       dlg.dismiss(); 
      } 
     } 
    }); 
}

来源

2014-07-23 21:29:33 andrew

如何保持DialogPreference onClick

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