Androidx学习笔记(24)--对话框

确定取消对话框

  • 创建对话框构建器对象,类似工厂模式
  • AlertDialog.Builder builder = new Builder(this);
    
  • 设置标题和正文
  • builder.setTitle("警告");
    builder.setMessage("若练此功,必先自宫");
    
  • 设置确定和取消按钮

    builder.setPositiveButton("现在自宫", new OnClickListener() {
    
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            Toast.makeText(MainActivity.this, "恭喜你自宫成功,现在程序退出", 0).show();
        }
    });
    
    builder.setNegativeButton("下次再说", new OnClickListener() {
    
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            Toast.makeText(MainActivity.this, "若不自宫,一定不成功", 0).show();
        }
    });
    
  • 使用构建器创建出对话框对象

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

案例代码

	public void click1(View v){
		AlertDialog.Builder builder = new Builder(this);
		//设置图标
		builder.setIcon(android.R.drawable.alert_dark_frame);
		//设置标题
		builder.setTitle("欲练此功必先自宫");
		//设置文本
		builder.setMessage("李志平,想清楚哦");
		
		//设置确定按钮
		builder.setPositiveButton("确定", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				Toast.makeText(MainActivity.this, "感谢使用本软件,再见", 0).show();
			}
		});
		
		//设置取消按钮
		builder.setNegativeButton("取消", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				Toast.makeText(MainActivity.this, "若不自宫,一定不成功", 0).show();
			}
		});
		//使用创建器,生成一个对话框对象
		AlertDialog ad = builder.create();
		ad.show();
	}


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