赵雅智_android_ui_dialog

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运行效果：

方法一

public void openDialog(View v) {// 打开一个对话框// 构建者对象AlertDialog.Builder builder = new Builder(this);// 构建者创建一个对话框AlertDialog alertDialog = builder.create();// 设置对话框的标题alertDialog.setTitle("我是对话框");// 设置对话框内容alertDialog.setMessage("你是否真的要退出程序？");// 设置对话框的图标alertDialog.setIcon(R.drawable.ic_launcher);alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "确定",new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "确定",Toast.LENGTH_LONG).show();}});alertDialog.setButton(DialogInterface.BUTTON_NEUTRAL, "中立",new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, "中立",Toast.LENGTH_LONG).show();}});alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "取消",new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, "取消",Toast.LENGTH_LONG).show();}});//必须设置alertDialog.show();}

方法2

public void openDialog(View v) {new AlertDialog.Builder(this).setTitle("我是对话框").setMessage("你是否真的要退出程序").setIcon(R.drawable.ic_launcher).setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "确定",Toast.LENGTH_LONG).show();}}).setNeutralButton("中立", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, "中立",Toast.LENGTH_LONG).show();}}).setNegativeButton("取消",new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, "取消",Toast.LENGTH_LONG).show();}}).create().show(); }

方法3

新建一个activity，在AndroidMenifest.xml中设置Theme主题

android:theme="@android:style/Theme.Dialog"

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