/**

         * Returns the identifier of this process's user.

         * 返回此进程的用户的标识符。

         */

        Log.e(TAG, "Process.myUid() = " + android.os.Process.myTid());

        /**

         * Returns the identifier of this process, which can be used with

         * killProcess and sendSignal.

         * 返回此进程的标识符，可用于进程和发送信号。

         */

        Log.e(TAG, "Process.myPid() = " + android.os.Process.myPid());

        /**

         * Returns the identifier of the calling thread, which be used with

         * setThreadPriority(int, int).

         * 返回调用线程的标识符，该标识符与StTeRead优先级（int，int）。

         */

        Log.e(TAG, "Process.myTid() = " + android.os.Process.myTid());

        /**

         * Returns the thread's identifier. The ID is a positive long generated

         * on thread creation, is unique to the thread, and doesn't change

         * during the lifetime of the thread; the ID may be reused after the

         * thread has been terminated.

         * 返回线程的标识符。ID是正长生成的关于线程创建，对于线程是唯一的，并且不会改变。

         * 在线程的生存期内，ID可以在线程已被终止。

         */

        //返回当前线程的id

        Log.e(TAG, "Thread.currentThread().getId() = "

                + Thread.currentThread().getId());

        //返回主线程的id

        Log.e(TAG, "getMainLooper().getThread().getId() = "

                + getMainLooper().getThread().getId());

        //返回当前应用的主线程id

        Log.e(TAG,

                        "((getApplication().getMainLooper()).getThread()).getId() = "

                                + ((getApplication().getMainLooper()).getThread())

                                .getId());

        /**

         * Return the identifier of the task this activity is in. This

         * identifier will remain the same for the lifetime of the activity.

         * 返回此活动正在执行的任务的标识符。这个标识符对于活动的生存期将保持不变。

         */

        //返回activity任务栈的id

        Log.e(TAG, "getTaskId() = " + getTaskId());

        /**

         * The kernel user-ID that has been assigned to this application;

         * currently this is not a unique ID (multiple applications can have the

         * same uid).

         * 已分配给该应用程序的内核用户ID；这不是一个唯一的ID（多个应用程序可以有相同的UID）。

         */

        Log.e(TAG, "getApplicationInfo().uid = " + getApplicationInfo().uid);

        /**

         * The name of the process this application should run in. From the

         * "process" attribute or, if not set, the same as packageName.

         * 此应用程序应运行的进程的名称。从“进程”属性，或如果没有设置，与PACKAGEName相同。

         */

        Log.e(TAG, "getApplicationInfo().processName = "

                + getApplicationInfo().processName);

        /**

         * 得到当前activity的信息

         */

        Log.e(TAG, "Activity.toString:"+this.toString());

        new Thread(new Runnable() {

            @Override

            public void run() {

                //返回当前线程的id

                // TODO Auto-generated method stub

                Log.e(TAG, "Thread.currentThread().getId() = "

                        + Thread.currentThread().getId());

            }

        }).start();