Android中经常会使用到Dialog（弹出框效果），而且功能非常强大，可以模拟出N种弹出框效果。如图所示：
下面将通过一个小实例，来像大家展示Android中功能强大的Dialog。代码都写了详细的注释，读者不妨试着手动去敲。
当然，由于时间的关系，还有个别功能没有完成，先有的几个展示效果中也可能有bug，代码也有很多需要优化的地方。望大家热心指出。
下面是代码（有点长哦）：
package com.chaoyang.activity; import java.util.ArrayList; import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends Activity { /** Called when the activity is first created. */ final String[] items={"张三","李四","王五","赵六","阿猫","阿狗"}; int mSingleChoiceID = -1; ArrayList <Integer>MultiChoiceID = new ArrayList <Integer>(); private ProgressDialog mProgressDialog = null; private static final int MAX_PROGRESS = 100; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); /*START 设置那些按钮的点击监听对象*/ ButtonOnclikListen listen =new ButtonOnclikListen(); Button btnConfim =(Button)this.findViewById(R.id.btnConfim); Button btnCheck =(Button)this.findViewById(R.id.btnCheck); Button btnCustom =(Button)this.findViewById(R.id.btnCustom); Button BtnList =(Button)this.findViewById(R.id.BtnList); Button btnMore =(Button)this.findViewById(R.id.btnMore); Button BtnProgressbar =(Button)this.findViewById(R.id.BtnProgressbar); Button btnRead =(Button)this.findViewById(R.id.btnRead); Button btnRidio =(Button)this.findViewById(R.id.btnRidio); btnConfim.setOnClickListener(listen); btnCheck.setOnClickListener(listen); btnConfim.setOnClickListener(listen); BtnList.setOnClickListener(listen); btnMore.setOnClickListener(listen); BtnProgressbar.setOnClickListener(listen); btnRead.setOnClickListener(listen); btnRidio.setOnClickListener(listen); /* END */ } //定义一个公共方法，弹出消息 private void showDialogMSG(String msg) { new AlertDialog.Builder(MainActivity.this) .setMessage(msg) .show(); } //定义一个内部类，继承至OnClickListener，专门来处理按钮点击事件（面向对象，灵活） private final class ButtonOnclikListen implements View.OnClickListener { @Override public void onClick(View v) { // TODO Auto-generated method stub Button button =(Button) v;//接收被点击的Button对象 AlertDialog.Builder builder =new AlertDialog.Builder(MainActivity.this);//定义一个弹出框对象 builder.setIcon(R.drawable.aa);//设置弹出框的ICON switch (v.getId()) { case R.id.btnConfim : builder.setTitle("确定提交吗？");//设置弹出框的标题 builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { showDialogMSG("您选择了确定"); } }); builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { showDialogMSG("您选择了取消"); } }); break; case R.id.btnMore: builder.setTitle("评价");//标题 builder.setMessage("说说李孝利在你心里的印象");//弹出框消息 builder.setPositiveButton("性感",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub showDialogMSG("您觉得她很性感"); } }); builder.setNeutralButton("漂亮", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub showDialogMSG("您觉得她很漂亮"); } }); builder.setNegativeButton("风骚", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub showDialogMSG("您觉得她很风骚"); } }); break; case R.id.BtnList : builder.setTitle("列表框"); builder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub showDialogMSG("您选择了ID为"+which+"的人，名字叫："+items[which]); } }); break; case R.id.btnRidio: mSingleChoiceID = -1; builder.setTitle("单选框"); builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub mSingleChoiceID=which; showDialogMSG("您选择了ID是"+mSingleChoiceID+",名字为："+items[which]); } }); builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub if(mSingleChoiceID>-1) { showDialogMSG("您最终选择的是"+items[mSingleChoiceID]); }else { showDialogMSG("您最终选择的是"+items[0]); } } }); builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }); break; case R.id.btnCheck : MultiChoiceID.clear(); //先清空集合 builder.setTitle("多项选择"); builder.setMultiChoiceItems(items,new boolean[]{false,false,false,false,false,false}, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { // TODO Auto-generated method stub if(isChecked) { MultiChoiceID.add(which); showDialogMSG("您选择了"+items[which]); }else { MultiChoiceID.remove(which); } } }); builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub String str=""; for(int i = 0;i<MultiChoiceID.size();i++) { str+=items[MultiChoiceID.get(i)]+","; } //去掉最后一个"," if(str.length()>0){ str = str.substring(0,str.length()-1); } showDialogMSG("你一共选择的有"+str); } }); builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }); break; case R.id.BtnProgressbar: mProgressDialog =new ProgressDialog(MainActivity.this); mProgressDialog.setTitle("进度条窗口"); mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置样式 mProgressDialog.setMax(MAX_PROGRESS);//设置最大值 mProgressDialog.setButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { //这里添加点击后的逻辑 } }); mProgressDialog.setButton2("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { //这里添加点击后的逻辑 } }); mProgressDialog.show(); new Thread().start(); return; case R.id.btnCustom: break; case R.id.btnRead: break; } builder.create().show();//创建并显示弹出框 } } }
布局文件部分，比较简单：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/btnConfim" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="确定/取消" /> <Button android:id="@+id/btnMore" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="多个消息提示" /> <Button android:id="@+id/BtnList" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="列表框" /> <Button android:id="@+id/BtnProgressbar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="进度条框" /> <Button android:id="@+id/btnRidio" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="单选框" /> <Button android:id="@+id/btnCheck" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="多选框" /> <Button android:id="@+id/btnCustom" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="自定义布局" /> <Button android:id="@+id/btnRead" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="读取进度框" /> </LinearLayout>