问Android对话框，按下按钮时保持对话框打开

EN

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage("Test for preventing dialog close");
AlertDialog dialog = builder.create();
dialog.show();
//Overriding the handler immediately after show is probably a better approach than OnShowListener as described below
dialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener()
      {            
          @Override
          public void onClick(View v)
          {
              Boolean wantToCloseDialog = false;
              //Do stuff, possibly set wantToCloseDialog to true then...
              if(wantToCloseDialog)
                  dismiss();
              //else dialog stays open. Make sure you have an obvious way to close the dialog especially if you set cancellable to false.
          }
      });

/*
 * Prepare the alert with a Builder.
 */
AlertDialog.Builder b = new AlertDialog.Builder(this);

b.setNegativeButton("Button", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {}
});
this.alert = b.create();

/*
 * Add an OnShowListener to change the OnClickListener on the
 * first time the alert is shown. Calling getButton() before
 * the alert is shown will return null. Then use a regular
 * View.OnClickListener for the button, which will not 
 * dismiss the AlertDialog after it has been called.
 */

this.alertReady = false;
alert.setOnShowListener(new DialogInterface.OnShowListener() {
    @Override
    public void onShow(DialogInterface dialog) {
        if (alertReady == false) {
            Button button = alert.getButton(DialogInterface.BUTTON_NEGATIVE);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //do something
                }
            });
            alertReady = true;
        }
    }
});