Android Open Source - DouDouAndroidDemo Float Window Manager

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License

The source code is released under:

Apache License

Java Source Code

package floatwindow;
/*from w w w.  j av  a 2s . co m*/
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.List;

import com.oldoldb.doudouandroiddemo.R;

import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.graphics.PixelFormat;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.TextView;

public class FloatWindowManager {
  
  private static FloatWindowManager instanceFloatWindowManager = null;
  public static FloatWindowManager getInstance()
  {
    if(instanceFloatWindowManager == null){
      synchronized (FloatWindowManager.class) {
        if(instanceFloatWindowManager == null){
          instanceFloatWindowManager = new FloatWindowManager();
        }
      }
    }
    return instanceFloatWindowManager;
  }
  private FloatWindowSmallView mFloatWindowSmallView;
  private FloatWindowLargeView mFloatWindowLargeView;
  private RocketLauncher mRocketLauncher;
  private WindowManager.LayoutParams mSmalLayoutParams;
  private WindowManager.LayoutParams mLargeLayoutParams;
  private WindowManager.LayoutParams mLauncherLayoutParams;
  private WindowManager mWindowManager;
  private ActivityManager mActivityManager;
  private FloatWindowManager()
  {
    
  }
  public WindowManager getWindowManager(Context context)
  {
    if(mWindowManager == null){
      mWindowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
    }
    return mWindowManager;
  }
  public ActivityManager getActivityManager(Context context)
  {
    if(mActivityManager == null){
      mActivityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
    }
    return mActivityManager;
  }
  public void createSmallFloatWindow(Context context)
  {
    WindowManager windowManager = getWindowManager(context);
    DisplayMetrics displayMetrics = new DisplayMetrics();
    windowManager.getDefaultDisplay().getMetrics(displayMetrics);
    int screenWidth = displayMetrics.widthPixels;
    int screenHeight = displayMetrics.heightPixels;
    if(mFloatWindowSmallView == null){
      mFloatWindowSmallView = FloatWindowSmallView.getInstance(context);
      if(mSmalLayoutParams == null){
        mSmalLayoutParams = new WindowManager.LayoutParams();
        mSmalLayoutParams.type = android.view.WindowManager.LayoutParams.TYPE_PHONE;
        mSmalLayoutParams.format = PixelFormat.RGBA_8888;
        mSmalLayoutParams.flags = android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        mSmalLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;
        mSmalLayoutParams.width = mFloatWindowSmallView.getmViewWidth();
        mSmalLayoutParams.height = mFloatWindowSmallView.getmViewHeight();
        mSmalLayoutParams.x = screenWidth;
        mSmalLayoutParams.y = screenHeight / 2;
      }
      mFloatWindowSmallView.setParams(mSmalLayoutParams);
      windowManager.addView(mFloatWindowSmallView, mSmalLayoutParams);
    }
  }
  
  public void removeSmallFloatWindow(Context context)
  {
    if(mFloatWindowSmallView != null){
      WindowManager windowManager = getWindowManager(context);
      windowManager.removeView(mFloatWindowSmallView);
      mFloatWindowSmallView = null;
    }
  }
  
  public void createLargeFloatWindow(Context context)
  {
    WindowManager windowManager = getWindowManager(context);
    DisplayMetrics displayMetrics = new DisplayMetrics();
    windowManager.getDefaultDisplay().getMetrics(displayMetrics);
    int screenWidth = displayMetrics.widthPixels;
    int screenHeight = displayMetrics.heightPixels;
    if(mFloatWindowLargeView == null){
      mFloatWindowLargeView = FloatWindowLargeView.getInstance(context);
      if(mLargeLayoutParams == null){
        mLargeLayoutParams = new WindowManager.LayoutParams();
        mLargeLayoutParams.x = screenWidth / 2 - mFloatWindowLargeView.getmViewWidth() / 2;
        mLargeLayoutParams.y = screenHeight / 2 - mFloatWindowLargeView.getmViewHeight() / 2;
        mLargeLayoutParams.type = android.view.WindowManager.LayoutParams.TYPE_PHONE;
        mLargeLayoutParams.format = PixelFormat.RGBA_8888;
        mLargeLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;
        mLargeLayoutParams.width = mFloatWindowLargeView.getmViewWidth();
        mLargeLayoutParams.height = mFloatWindowLargeView.getmViewHeight();
      }
      windowManager.addView(mFloatWindowLargeView, mLargeLayoutParams);
    }
  }
  
  public void removeLargeFloatWindow(Context context)
  {
    if(mFloatWindowLargeView != null){
      WindowManager windowManager = getWindowManager(context);
      windowManager.removeView(mFloatWindowLargeView);
      mFloatWindowLargeView = null;
    }
  }
  
  public void createLauncher(Context context) {  
        WindowManager windowManager = getWindowManager(context);  
        DisplayMetrics displayMetrics = new DisplayMetrics();
    windowManager.getDefaultDisplay().getMetrics(displayMetrics);
    int screenWidth = displayMetrics.widthPixels;
    int screenHeight = displayMetrics.heightPixels;
        if (mRocketLauncher == null) {  
          mRocketLauncher = RocketLauncher.getInstance(context);
            if (mLauncherLayoutParams == null) {  
              mLauncherLayoutParams = new WindowManager.LayoutParams();
              mLauncherLayoutParams.x = screenWidth / 2 - mRocketLauncher.getmWidth() / 2;  
              mLauncherLayoutParams.y = screenHeight - mRocketLauncher.getHeight();
              mLauncherLayoutParams.type = LayoutParams.TYPE_PHONE;  
              mLauncherLayoutParams.format = PixelFormat.RGBA_8888;  
              mLauncherLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;  
              mLauncherLayoutParams.width = mRocketLauncher.getmWidth();  
              mLauncherLayoutParams.height = mRocketLauncher.getmHeight();
            }  
            windowManager.addView(mRocketLauncher, mLauncherLayoutParams);  
        }  
    }  
  
    public void removeLauncher(Context context) {  
        if (mRocketLauncher != null) {  
            WindowManager windowManager = getWindowManager(context);  
            windowManager.removeView(mRocketLauncher);  
            mRocketLauncher = null;  
        }  
    }  
  
    public void updateLauncher() {  
        if (mRocketLauncher != null) {  
          mRocketLauncher.updateLauncherStatus(isReadyToLaunch());  
        }  
    }
    public boolean isReadyToLaunch() {  
      if(mLauncherLayoutParams == null){
        createLauncher(mFloatWindowSmallView.getContext());
      }
        if ((mSmalLayoutParams.x > mLauncherLayoutParams.x && mSmalLayoutParams.x  
                + mSmalLayoutParams.width < mLauncherLayoutParams.x  
                + mLauncherLayoutParams.width)  
                && (mSmalLayoutParams.y + mSmalLayoutParams.height > mLauncherLayoutParams.y)) {  
            return true;  
        }  
        return false;  
    }  
  public boolean isFloatWindowShowing()
  {
    return mFloatWindowSmallView != null || mFloatWindowLargeView != null;
  }
  public void updateUsedPercent(Context context)
  {
    if(mFloatWindowSmallView != null){
      TextView textView = (TextView)mFloatWindowSmallView.findViewById(R.id.textview_percent);
      textView.setText(getUsedPercentValue(context));
    }
  }
  
  public String getUsedPercentValue(Context context)
  {
    String dir = "/proc/meminfo";
    try {
      FileReader fileReader = new FileReader(dir);
      BufferedReader bufferedReader = new BufferedReader(fileReader, 2048);
      String memoryString = bufferedReader.readLine();
      String subString = memoryString.substring(memoryString.indexOf("MemTotal:"));
      bufferedReader.close();
      long totalMemorySize = Integer.parseInt(subString.replaceAll("\\D+", ""));
      long avaliableSize = getAvailableMemory(context) / 1024;
      int percent = (int)((totalMemorySize - avaliableSize) / (float)totalMemorySize * 100);
      return percent + "%";
    } catch (IOException e) {
      // TODO: handle exception
      e.printStackTrace();
    }
    return "???";
  }
  private long getAvailableMemory(Context context)
  {
    ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
    getActivityManager(context).getMemoryInfo(memoryInfo);
    return memoryInfo.availMem;
  }
  
  public void killBackgroundProcess(Context context)
  {
    List<RunningTaskInfo> runningTaskInfos = mActivityManager.getRunningTasks(Integer.MAX_VALUE);
    for(RunningTaskInfo runningTaskInfo : runningTaskInfos){
      String packageName = runningTaskInfo.topActivity.getPackageName();
      mActivityManager.killBackgroundProcesses(packageName);
    }
  }
}

Java Source Code List

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