Android开发学习：[6]AlertDialog

1、首先我们在界面布局上面布局四个按钮

2、然后我们在代码中关联这四个按钮：Button button3=(Button)酆璁冻嘌findViewById(R.i颊俄岿髭d.button3); Button button4=(Button)findViewById(R.id.button4); Button button5=(Button)findViewById(R.id.button5); Button button6=(Button)findViewById(R.id.button6);

3、然后我们敲入AlterDialog代码：//显示带中立，取消，确定的提示框 button3.setOnClickListener(new View.OnCl足毂忍珩ickListener() { @Override public void onClick(View v) { AlertDialog alertDialog=new AlertDialog.Builder(MainActivity.this).create(); //alertDialog.setIcon(R.drawable.desert); alertDialog.setTitle("System Information:"); alertDialog.setMessage("Dialog with cancel confirm and neutral button!"); //添加取消按钮 alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE,"Cancel",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(MainActivity.this,"You clicked the Cancel Button",Toast.LENGTH_LONG).show(); } }); //添加确定按钮 alertDialog.setButton(DialogInterface.BUTTON_POSITIVE,"Confirm",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(MainActivity.this,"You clicked the Confirm Button",Toast.LENGTH_LONG).show(); } }); //添加中立按钮 alertDialog.setButton(DialogInterface.BUTTON_NEUTRAL,"neutral",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(MainActivity.this,"You clicked the neutral Button",Toast.LENGTH_LONG).show(); } }); alertDialog.show(); } });图片请注意看行号

4、现在我们点击运行按钮，运行此程序，界面如下图所示

5、然后我们点击Button3会出现三个选择按钮

6、点击任意一个回出现Toast显示你点击了哪个按钮

7、后面将继续介绍后续的三个AlterDialog欢迎继续关注。