Android中进程相关信息获取，pid，进程名

1. 获取pid

int pid = android.os.Process.myPid();

2. 获取进程名及其他信息

ActivityManager mActivityManager = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);for (ActivityManager.RunningAppProcessInfo appProcess : mActivityManager        .getRunningAppProcesses()) {    if (appProcess.pid == pid) {        procName = appProcess.processName;    }}

appProcess中可以获取一些进程相关的信息，如：

        /**         * The name of the process that this object is associated with         */        public String processName;        /**         * The pid of this process; 0 if none         */        public int pid;        /**         * The user id of this process.         */        public int uid;        /**         * All packages that have been loaded into the process.         */        public String pkgList[];        /**         * Flags of information.  May be any of         * {@link #FLAG_CANT_SAVE_STATE}.         * @hide         */        public int flags;        /**         * Last memory trim level reported to the process: corresponds to         * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int)         * ComponentCallbacks2.onTrimMemory(int)}.         */        public int lastTrimLevel;        /**         * The relative importance level that the system places on this         * process.  May be one of {@link #IMPORTANCE_FOREGROUND},         * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE},         * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}.  These         * constants are numbered so that "more important" values are always         * smaller than "less important" values.         */        public int importance;        /**         * An additional ordering within a particular {@link #importance}         * category, providing finer-grained information about the relative         * utility of processes within a category.  This number means nothing         * except that a smaller values are more recently used (and thus         * more important).  Currently an LRU value is only maintained for         * the {@link #IMPORTANCE_BACKGROUND} category, though others may         * be maintained in the future.         */        public int lru;        /**         * The reason for {@link #importance}, if any.         */        public int importanceReasonCode;        /**         * For the specified values of {@link #importanceReasonCode}, this         * is the process ID of the other process that is a client of this         * process.  This will be 0 if no other process is using this one.         */        public int importanceReasonPid;        /**         * For the specified values of {@link #importanceReasonCode}, this         * is the name of the component that is being used in this process.         */        public ComponentName importanceReasonComponent;        /**         * When {@link #importanceReasonPid} is non-0, this is the importance         * of the other pid. @hide         */        public int importanceReasonImportance;        /**         * Current process state, as per PROCESS_STATE_* constants.         * @hide         */        public int processState;

3. 其他

ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);ActivityManager.MemoryInfo info = new ActivityManager.MemoryInfo();activityManager.getMemoryInfo(info);MLog.i(TAG, "系统剩余内存:" + (info.availMem >> 20) + "MB");MLog.i(TAG, "系统总内存:" + (info.totalMem >> 20)+"MB");MLog.i(TAG, "系统是否处于低内存运行：" +info.lowMemory);MLog.i(TAG, "当系统剩余内存低于" + (info.threshold >> 20) + "MB时就看成低内存运行");Runtime rt = Runtime.getRuntime();MLog.d(TAG, "Available heap " + (rt.freeMemory() >> 20) + "MB");MLog.d(TAG, "MAX heap " + (rt.maxMemory() >> 20) + "MB");MLog.d(TAG, "totle heap " + (rt.totalMemory() >> 20) + "MB");

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