仿iPhone的AssistiveTouch 悬浮辅助球工具

http://blog.csdn.net/wulianghuan/article/details/8918028

http://blog.csdn.net/wulianghuan/article/details/8918028

http://blog.csdn.net/wulianghuan/article/details/8918028

http://blog.csdn.net/wulianghuan/article/details/8918028

仿iPhone的AssistiveTouch 悬浮辅助球工具

分类： 小项目 2013-05-12 23:16  1235人阅读  评论(0)  收藏  举报

仿iPhone AssistiveTouch 悬浮辅助球 悬浮窗口

用过iphone的朋友都知道，iPhone有个圆球辅助工具，它漂浮在你的手机屏幕(在任何APP之上)，你可以将它移动到任何地方，它叫做AssistiveTouch，本篇模拟该软件实现一个小案例，主要是实现它的界面，首先来看看实现的效果吧：

拖动小圆球：

点击弹出pop窗口：

为了让辅助工具一直悬浮在窗口之上，这里使用的机制是通过在程序初始化是，启动一个service，在service的onCreate() 函数中使用LayoutInflater来加载一个view，而这个view就是辅助球的布局文件：floatball.xml，然后对它进行onclick事件的监听，setOnClickListener监听到辅助球点击事件之后，就创建一个PopupWindow，弹出如上的菜单界面，大体的实现就是这样。

其实，实现窗口悬浮于最前面的一个重要属性是：WindowManager.LayoutParams.TYPE_PHONE

我们只要将WindowManager.LayoutParams的type属性设置为 WindowManager.LayoutParams.TYPE_PHONE就可以实现悬浮最前面。

工程目录结构：

部分代码解析：

MyApplication.java：

 package com.tyd.floatball.util;

 import android.app.Application;
 import android.view.WindowManager;

 public class MyApplication extends Application {

     private WindowManager.LayoutParams wmParams = new WindowManager.LayoutParams();

     public WindowManager.LayoutParams getMywmParams() {
         return wmParams;
     }

 }

MainActivity.java：

 package com.tyd.floatball.ui;

 import com.tyd.floatball.R;
 import com.tyd.floatball.R.layout;
 import com.tyd.floatball.service.TopFloatService;
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;

 public class MainActivity extends Activity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         Intent service = new Intent();
         service.setClass(this, TopFloatService.class);
         //启动服务
         startService(service);
     }
 }

TopFloatService.java：

 package com.tyd.floatball.service;

 import android.app.Service;
 import android.content.Intent;
 import android.graphics.PixelFormat;
 import android.graphics.Rect;
 import android.graphics.drawable.BitmapDrawable;
 import android.os.IBinder;
 import android.util.DisplayMetrics;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnKeyListener;
 import android.view.View.OnTouchListener;
 import android.view.WindowManager;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.PopupWindow;
 import android.widget.RelativeLayout;
 import android.widget.Toast;
 import com.tyd.floatball.R;
 import com.tyd.floatball.util.MyApplication;

 public class TopFloatService extends Service implements OnClickListener,OnKeyListener{
     WindowManager wm = null;
     WindowManager.LayoutParams ballWmParams = null;
     private View ballView;
     private View menuView;
     private float mTouchStartX;
     private float mTouchStartY;
     private float x;
     private float y;
     private RelativeLayout menuLayout;
     private Button floatImage;
     private PopupWindow pop;
     private RelativeLayout menuTop;
     private boolean ismoving = false;

     @Override
     public void onCreate() {
         super.onCreate();
         //加载辅助球布局
         ballView = LayoutInflater.from(this).inflate(R.layout.floatball, null);
         floatImage = (Button)ballView.findViewById(R.id.float_image);
         setUpFloatMenuView();
         createView();
     }

     /**
      * 窗口菜单初始化
      */
     private void setUpFloatMenuView(){
         menuView = LayoutInflater.from(this).inflate(R.layout.floatmenu, null);
         menuLayout = (RelativeLayout)menuView.findViewById(R.id.menu);
         menuTop = (RelativeLayout)menuView.findViewById(R.id.lay_main);
         menuLayout.setOnClickListener(this);
         menuLayout.setOnKeyListener(this);
         menuTop.setOnClickListener(this);
     }

     /**
      * 通过MyApplication创建view，并初始化显示参数
      */
     private void createView() {
         wm = (WindowManager) getApplicationContext().getSystemService("window");
         ballWmParams =  ((MyApplication) getApplication()).getMywmParams();
         ballWmParams.type = WindowManager.LayoutParams.TYPE_PHONE;
         ballWmParams.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
         ballWmParams.gravity = Gravity.LEFT | Gravity.TOP;
         ballWmParams.x = 0;
         ballWmParams.y = 0;
         ballWmParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
         ballWmParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
         ballWmParams.format = PixelFormat.RGBA_8888;
         //添加显示层
         wm.addView(ballView, ballWmParams);
         //注册触碰事件监听器
         floatImage.setOnTouchListener(new OnTouchListener() {
             public boolean onTouch(View v, MotionEvent event) {
                 x = event.getRawX();
                 y = event.getRawY();
                 switch (event.getAction()) {
                 case MotionEvent.ACTION_DOWN:
                     ismoving = false;
                     mTouchStartX = (int)event.getX();
                     mTouchStartY = (int)event.getY();
                     break;
                 case MotionEvent.ACTION_MOVE:
                     ismoving = true;
                     updateViewPosition();
                     break;
                 case MotionEvent.ACTION_UP:
                     mTouchStartX = mTouchStartY = 0;
                     break;
                 }
                 //如果拖动则返回false，否则返回true
                 if(ismoving == false){
                     return false;
                 }else{
                     return true;
                 }
             }

         });
         //注册点击事件监听器
         floatImage.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 DisplayMetrics dm = getResources().getDisplayMetrics();
                 pop = new PopupWindow(menuView, dm.widthPixels, dm.heightPixels);
                 pop.showAtLocation(ballView, Gravity.CENTER, 0, 0);
                 pop.update();
             }
         });
     }

     /**
      * 更新view的显示位置
      */
     private void updateViewPosition() {
         ballWmParams.x = (int) (x - mTouchStartX);
         ballWmParams.y = (int) (y - mTouchStartY);
         wm.updateViewLayout(ballView, ballWmParams);
     }

     @Override
     public IBinder onBind(Intent intent) {
         return null;
     }

     @Override
     public void onClick(View v) {
         switch (v.getId()) {
         case R.id.lay_main:
             Toast.makeText(getApplicationContext(), "111", 1000).show();
             break;

         default:
             if(pop!=null && pop.isShowing()){
                 pop.dismiss();
             }
             break;
         }

     }

     @Override
     public boolean onKey(View v, int keyCode, KeyEvent event) {
         Toast.makeText(getApplicationContext(), "keyCode:"+keyCode, 1000).show();
         switch (keyCode) {
         case KeyEvent.KEYCODE_HOME:
             pop.dismiss();
             break;
         default:
             break;
         }
         return true;
     }

 }

辅助球的布局文件 floatball.xml：

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
     android:layout_gravity="center_vertical">

     <Button
         android:id="@+id/float_image"
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:background="@drawable/selector_btn_assistive"
         />

 </FrameLayout>

窗口菜单的布局文件floatmenu.xml：

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/menu"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:background="@drawable/transparent" >

     <LinearLayout
         android:layout_width="@dimen/size_dialog"
         android:layout_height="@dimen/size_dialog"
         android:layout_centerInParent="true"
         android:background="@drawable/shape_background_assistivetouch"
         android:orientation="vertical" >

         <RelativeLayout
             android:id="@+id/lay_main"
             android:layout_width="fill_parent"
             android:layout_height="fill_parent"
             android:orientation="vertical"
             android:padding="4.0px"
             android:visibility="visible" >

             <TextView
                 android:id="@+id/btn_apps"
                 style="@style/Icon"
                 android:layout_centerInParent="true"
                 android:drawableTop="@drawable/selector_ic_apps"
                 android:text="@string/apps" />

             <TextView
                 android:id="@+id/btn_home_screen"
                 style="@style/Icon"
                 android:layout_alignParentBottom="true"
                 android:layout_centerHorizontal="true"
                 android:drawableTop="@drawable/selector_ic_home"
                 android:text="@string/home_screen" />

             <TextView
                 android:id="@+id/btn_setting"
                 style="@style/Icon"
                 android:layout_alignParentRight="true"
                 android:layout_centerVertical="true"
                 android:drawableTop="@drawable/selector_ic_phone"
                 android:text="@string/setting" />

             <TextView
                 android:id="@+id/btn_lock_screen"
                 style="@style/Icon"
                 android:layout_centerHorizontal="true"
                 android:drawableTop="@drawable/selector_ic_power_down"
                 android:text="@string/lock_screen" />

             <TextView
                 android:id="@+id/btn_favor"
                 style="@style/Icon"
                 android:layout_alignParentLeft="true"
                 android:layout_centerVertical="true"
                 android:drawableTop="@drawable/selector_ic_star"
                 android:text="@string/favor" />
         </RelativeLayout>
     </LinearLayout>

 </RelativeLayout>

AndroidManifest.xml：

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.tyd.floatball"
     android:versionCode="1"
     android:versionName="1.0" >
     <uses-sdk android:minSdkVersion="14" />

     <application
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:name=".util.MyApplication">
         <activity
             android:label="@string/app_name"
             android:name=".ui.MainActivity" >
             <intent-filter >
                 <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
         <service
                 android:name=".service.TopFloatService"
                 android:enabled="true"
                 android:exported="true"
             />
     </application>

     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
 </manifest>

该实例我已经将源码整理打包，进行了上传，下面是资源的下载地址：

http://download.csdn.net/detail/wulianghuan/5364129

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