activityManager.getRunningAppProcesses（）仅返回有关当前应用程序的信息。如何在android中检索所有正在运行的应用程序？

''' ActivityManager ActivityManager=（ActivityManager）getSystemService（Context.ACTIVITY_服务）； ActivityManager.MemoryInfo MemoryInfo=新建ActivityManager.MemoryInfo（）； activityManager.getMemoryInfo（memoryInfo）

Log.i（标记“memoryInfo.availem”+memoryInfo.availem+“\n”）；
Log.i（标记“memoryInfo.lowMemory”+memoryInfo.lowMemory+“\n”）；
Log.i（标记“memoryInfo.threshold”+memoryInfo.threshold+“\n”）；
列出runningAppProcesses=activityManager.getRunningAppProcesses（）；
Map pidMap=newtreemap（）；
对于（ActivityManager.RunningAppProcessInfo RunningAppProcessInfo:RunningAppProcesss）
{
put（runningAppProcessInfo.pid，runningAppProcessInfo.processName）；
字符串s=list.getText（）.toString（）；
list.setText（s+runningAppProcessInfo.processName）；
}
集合键=pidMap.keySet（）；
for（int键：键）
{
int-pids[]=新int[1]；
pids[0]=键；
android.os.Debug.MemoryInfo[]memoryInfoArray=activityManager.getProcessMemoryInfo（pids）；
for（android.os.Debug.MemoryInfo-pidMemoryInfo:MemoryInfo-Array）
{
Log.i（TAG，String.format（“**MEMINFO在pid%d[%s]**\n”、pids[0]、pidMap.get（pids[0]））；
Log.i（标记“pidMemoryInfo.getTotalPrivateDirty（）：”+pidMemoryInfo.getTotalPrivateDirty（）+“\n”）；
Log.i（标记“pidMemoryInfo.getTotalPss（）：”+pidMemoryInfo.getTotalPss（）+“\n”）；
Log.i（标记“pidMemoryInfo.getTotalSharedDirty（）：”+pidMemoryInfo.getTotalSharedDirty（）+“\n”）；
}
}

'''

    Log.i(TAG, " memoryInfo.availMem " + memoryInfo.availMem + "\n" );
    Log.i(TAG, " memoryInfo.lowMemory " + memoryInfo.lowMemory + "\n" );
    Log.i(TAG, " memoryInfo.threshold " + memoryInfo.threshold + "\n" );

    List<ActivityManager.RunningAppProcessInfo> runningAppProcesses = activityManager.getRunningAppProcesses();

    Map<Integer, String> pidMap = new TreeMap<Integer, String>();
    for (ActivityManager.RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses)
    {
        pidMap.put(runningAppProcessInfo.pid, runningAppProcessInfo.processName);
        String s= list.getText().toString();
        list.setText(s+runningAppProcessInfo.processName);
    }

    Collection<Integer> keys = pidMap.keySet();

    for(int key : keys)
    {
        int pids[] = new int[1];
        pids[0] = key;
        android.os.Debug.MemoryInfo[] memoryInfoArray = activityManager.getProcessMemoryInfo(pids);
        for(android.os.Debug.MemoryInfo pidMemoryInfo: memoryInfoArray)
        {
            Log.i(TAG, String.format("** MEMINFO in pid %d [%s] **\n",pids[0],pidMap.get(pids[0])));
            Log.i(TAG, " pidMemoryInfo.getTotalPrivateDirty(): " + pidMemoryInfo.getTotalPrivateDirty() + "\n");
            Log.i(TAG, " pidMemoryInfo.getTotalPss(): " + pidMemoryInfo.getTotalPss() + "\n");
            Log.i(TAG, " pidMemoryInfo.getTotalSharedDirty(): " + pidMemoryInfo.getTotalSharedDirty() + "\n");
        }
    }