Android Dialog种类大全，让Activity显示在另外一个Activity之上

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AlertDialog(对话框)---简单对话框:

AlertDialog生成的对话框可以分为四个区域

图标区，标题区，内容区，按钮区

步骤：1、创建AlertDialog.Builder对象

2、调用AlertDialog.Builder的setTitle设置标题

3、调用AlertDialog.Builder的setIcon方法设置图片

4、AlertDialog.Builder的setMessage设置内容

5、调用AlertDialog.Builder的setPositiveButton设置确定按钮,setNegativeButton设置取消按钮

6、调用AlertDialog.Builder的show方法

简单alertDialog

<span style="font-size:14px;">import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.os.Bundle;import android.view.View;import android.widget.Toast;import com.example.android_lb_day4_ui.R;public class AletDialogTest extends Activity {       @Override       protected void onCreate(Bundle savedInstanceState) {             // TODO Auto-generated method stub             super.onCreate(savedInstanceState);            setContentView(R.layout. activity_alertdialog);      }       public void simple(View v) {            AlertDialog.Builder bulider = new AlertDialog.Builder(this);            bulider.setTitle( "简单对话框" ); // 设置标题            bulider.setIcon(R.drawable. ic_launcher); // 设置标题左边的图片            bulider.setMessage( "对话框测试内容\n第二行内容" ); // 设置显示的消息            bulider.setPositiveButton( "确定", new OnClickListener() {                   @Override                   public void onClick(DialogInterface dialog, int which) {                         // TODO Auto-generated method stub                        Toast. makeText(getApplicationContext(), "确定",                                    Toast. LENGTH_SHORT).show();                  }            });            bulider. setNegativeButton("取消", new OnClickListener() {                   @Override                   public void onClick(DialogInterface dialog, int which) {                         // TODO Auto-generated method stub                        Toast. makeText(getApplicationContext(), "取消",                                    Toast. LENGTH_SHORT).show();                  }            });            bulider.show();      }}</span><span style="color: rgb(255, 0, 0); font-size: 19px;"></span>

// 消息对话框

public void simple(View v) {

AlertDialog.Builder bulider = new AlertDialog.Builder(this);

bulider.setTitle( "简单消息对话框" ); // 设置标题

bulider.setIcon(R.drawable. ic_launcher); // 设置标题左边的图片

bulider.setMessage( "简单消息提示框...\n第二行的消息" );

setPositiveButton(bulider);

setNegativeButton(bulider);

bulider.show();

}

// 列表对话框

public void simpleList(View v) {

AlertDialog.Builder bulider = new AlertDialog.Builder(this);

bulider.setTitle( "简单列表对话框" ); // 设置标题

bulider.setIcon(R.drawable. ic_launcher); // 设置标题左边的图片

bulider.setItems(items, new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

Toast. makeText(getApplicationContext(), items[which],

Toast. LENGTH_SHORT).show();

}

});

setPositiveButton(bulider);

setNegativeButton(bulider);

bulider.show();

}

// 单选列表对话框

public void singleSelect(View v) {

AlertDialog.Builder bulider = new AlertDialog.Builder(this);

bulider.setTitle( "单选列表对话框" ); // 设置标题

bulider.setIcon(R.drawable. ic_launcher); // 设置标题左边的图片

bulider.setSingleChoiceItems( items, 1, new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Toast. makeText(getApplicationContext(), items[which],

Toast. LENGTH_SHORT).show();

}

});

setPositiveButton(bulider);

setNegativeButton(bulider);

bulider.show();

}

//多选列表对话框

public void mulSelect(View v){

AlertDialog.Builder bulider = new AlertDialog.Builder(this);

bulider.setTitle( "单选列表对话框" ); // 设置标题

bulider.setIcon(R.drawable. ic_launcher); // 设置标题左边的图片

bulider.setMultiChoiceItems( items, new boolean[]{false}, null);

setPositiveButton(bulider);

setNegativeButton(bulider);

bulider.show();

}

// 设置确定按钮

public AlertDialog.Builder setPositiveButton(AlertDialog.Builder bulider) {

return bulider.setPositiveButton("确定" , new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

Toast. makeText(getApplicationContext(), "确定",

Toast. LENGTH_SHORT).show();

}

});

}

// 设置取消按钮

public AlertDialog.Builder setNegativeButton(AlertDialog.Builder bulider) {

return bulider.setNegativeButton("取消" , new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

Toast. makeText(getApplicationContext(), "取消",

Toast. LENGTH_SHORT).show();

}

});

}

DatePickerDialog、TimePickerDialog使用：

只要通过new 关键字创建DatePickerDialog、TimePickerDialog的实例，调用他们的show()方法即可

DatePickerDialog的监听器：new DatePickerDialog.OnDateSetListener(){};

TimePickerDialog的监听器：newTimePickerDialog.OnTimeSetListener(){};

那么如何将Activity悬浮在另外一个Activity上面？答案很简单：

只要把显示的activity设定为窗口即可

在AndroidMainFest.xml文件中配置：

在<activity 里面 android:theme="@android:style/Theme.Dialog"/>

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