android中模拟对话框按钮的点击

因为业务要求,需要在程序中模拟点击对话框中的按钮

难度不大,就是按钮的模拟点击

代码如下

package com.qefee.testcanclealertdialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {
	Button btn_show;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		btn_show = (Button) findViewById(R.id.btn_show);
		
		final Builder builder = new Builder(this);
		builder.setTitle("this is a title");
		builder.setPositiveButton("submit", new DialogInterface.OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				Toast.makeText(MainActivity.this, "submit clicked", Toast.LENGTH_SHORT).show();
			}
		});
		builder.setNegativeButton("cancle", new DialogInterface.OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				Toast.makeText(MainActivity.this, "cancle clicked", Toast.LENGTH_SHORT).show();
			}
		});
		final AlertDialog alertDialog = builder.create();
		btn_show.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				alertDialog.show();
				// 获取确认按钮
				Button btn_positive = alertDialog.getButton(DialogInterface.BUTTON_POSITIVE);
				// 获取取消按钮
				Button btn_negative = alertDialog.getButton(DialogInterface.BUTTON_NEGATIVE);
				// 模拟按钮点击
//				btn_positive.callOnClick();
				btn_positive.performClick();
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.activity_main, menu);
		return true;
	}

}