android获取进程pid的方法,Android中进程相关信息获取，pid，进程名

1. 获取pidjava

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

2. 获取进程名及其余信息

ActivityManager mActivityManager = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);

for (ActivityManager.RunningAppProcessInfo appProcess : mActivityManager

.getRunningAppProcesses()) {

if (appProcess.pid == pid) {

procName = appProcess.processName;

}

}

appProcess中能够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. 其余android

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时就当作低内存运行");

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");