任务管理器查看正在运行的程序和服务

添加权限

 

<uses-permission
		android:name="android.permission.GET_TASKS"></uses-permission>

 

 

 

private ListView myList;
	private ActivityManager mActivityManager;
	private Button button1;

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.running_task);

		myList = (ListView) findViewById(R.id.listView1);

		button1 = (Button) findViewById(R.id.button1);
		button1.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				try {
					/* ActivityManager对象守系统取得ACTIVITY_SERVICE */
					mActivityManager = (ActivityManager) RunningTask.this
							.getSystemService(ACTIVITY_SERVICE);

					ArrayList<String> arylistTask = new ArrayList<String>();
					int intGetTastCounter = 30;

					/* 以getRunningTasks方法取并正在运行中的程序TaskInfo */
					List<ActivityManager.RunningTaskInfo> mRunningTasks = mActivityManager
							.getRunningTasks(intGetTastCounter);
					// List<ActivityManager.RunningServiceInfo> mRunningTasks =
					// mActivityManager.getRunningServices(intGetTastCounter);

					int i = 1;
					/* 以循环及baseActivity方式取得名称与ID */
					for (ActivityManager.RunningTaskInfo amTask : mRunningTasks)
					// for (ActivityManager.RunningServiceInfo amTask :
					// mRunningTasks)
					{
						arylistTask.add("" + (i++) + ": "
								+ amTask.baseActivity.getClassName() + "(ID="
								+ amTask.id + ")");
						// arylistTask.add("" + (i++) + ": "+ amTask.process +
						// "(ID=" + amTask.pid +")");
					}
					ArrayAdapter<String> aryAdapter1 = new ArrayAdapter<String>(
							RunningTask.this, R.layout.list_item2, arylistTask);
					if (aryAdapter1.getCount() == 0) {
						/* 当没有任何运行的操作，则提示信息 */
						Toast.makeText(RunningTask.this, "当前没有进行的任务",
								Toast.LENGTH_SHORT);
						// getResources().getText(R.string.str_err_no_running_service).toString(),

					} else {
						/* 发现后台运行程序，以ListView Widget条在出现 */
						myList.setAdapter(aryAdapter1);
					}
				} catch (SecurityException e) {
					/* 当无GET_TASKS权限时(SecurityException例?)提示信息 */
					Toast.makeText(RunningTask.this, "无GET_TASKS权限",
							Toast.LENGTH_SHORT);
				}
			}
		});
	}