Android Open Source - DouDouAndroidDemo Float Window Manager

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License

The source code is released under:

Apache License

Java Source Code

package com.oldoldb.doudouandroiddemo;
/* www . j a v a2 s.  c o  m*/
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

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

public class FloatWindowManager {
  
  private static FloatWindowSmallView sFloatWindowSmallView;
  private static FloatWindowLargeView sFloatWindowLargeView;
  private static WindowManager.LayoutParams sSmalLayoutParams;
  private static WindowManager.LayoutParams sLargeLayoutParams;
  private static WindowManager sWindowManager;
  private static ActivityManager sActivityManager;
  
  
  private static WindowManager getWindowManager(Context context)
  {
    if(sWindowManager == null){
      sWindowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
    }
    return sWindowManager;
  }
  private static ActivityManager getActivityManager(Context context)
  {
    if(sActivityManager == null){
      sActivityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
    }
    return sActivityManager;
  }
  public static 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(sFloatWindowSmallView == null){
      sFloatWindowSmallView = new FloatWindowSmallView(context);
      if(sSmalLayoutParams == null){
        sSmalLayoutParams = new WindowManager.LayoutParams();
        sSmalLayoutParams.type = android.view.WindowManager.LayoutParams.TYPE_PHONE;
        sSmalLayoutParams.format = PixelFormat.RGBA_8888;
        sSmalLayoutParams.flags = android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        sSmalLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;
        sSmalLayoutParams.width = FloatWindowSmallView.sViewWidth;
        sSmalLayoutParams.height = FloatWindowSmallView.sViewHeight;
        sSmalLayoutParams.x = screenWidth;
        sSmalLayoutParams.y = screenHeight / 2;
      }
      sFloatWindowSmallView.setParams(sSmalLayoutParams);
      windowManager.addView(sFloatWindowSmallView, sSmalLayoutParams);
    }
  }
  
  public static void removeSmallFloatWindow(Context context)
  {
    if(sFloatWindowSmallView != null){
      WindowManager windowManager = getWindowManager(context);
      windowManager.removeView(sFloatWindowSmallView);
      sFloatWindowSmallView = null;
    }
  }
  
  public static 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(sFloatWindowLargeView == null){
      sFloatWindowLargeView = new FloatWindowLargeView(context);
      if(sLargeLayoutParams == null){
        sLargeLayoutParams = new WindowManager.LayoutParams();
        sLargeLayoutParams.x = screenWidth / 2 - FloatWindowLargeView.sViewWidth / 2;
        sLargeLayoutParams.y = screenHeight / 2 - FloatWindowLargeView.sViewHeight / 2;
        sLargeLayoutParams.type = android.view.WindowManager.LayoutParams.TYPE_PHONE;
        sLargeLayoutParams.format = PixelFormat.RGBA_8888;
        sLargeLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;
        sLargeLayoutParams.width = FloatWindowLargeView.sViewWidth;
        sLargeLayoutParams.height = FloatWindowLargeView.sViewHeight;
      }
      windowManager.addView(sFloatWindowLargeView, sLargeLayoutParams);
    }
  }
  
  public static void removeLargeFloatWindow(Context context)
  {
    if(sFloatWindowLargeView != null){
      WindowManager windowManager = getWindowManager(context);
      windowManager.removeView(sFloatWindowLargeView);
      sFloatWindowLargeView = null;
    }
  }
  
  public static boolean isFloatWindowShowing()
  {
    return sFloatWindowSmallView != null || sFloatWindowLargeView != null;
  }
  public static void updateUsedPercent(Context context)
  {
    if(sFloatWindowSmallView != null){
      TextView textView = (TextView)sFloatWindowSmallView.findViewById(R.id.textview_percent);
      textView.setText(getUsedPercentValue(context));
    }
  }
  
  public static 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 static long getAvailableMemory(Context context)
  {
    ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
    getActivityManager(context).getMemoryInfo(memoryInfo);
    return memoryInfo.availMem;
  }
}

Java Source Code List

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