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February 25, 2021 05:56
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检测应用在UI线程的卡顿，打印出卡顿时调用堆栈。
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| public class BlockDetect { | |
| // BlockDetectByPrinter | |
| public static void start() { | |
| Looper.getMainLooper().setMessageLogging(new Printer() { | |
| private static final String START = ">>>>> Dispatching"; | |
| private static final String END = "<<<<< Finished"; | |
| @Override | |
| public void println(String x) { | |
| if (x.startsWith(START)) { | |
| LogMonitor.getInstance().startMonitor(); | |
| } | |
| if (x.startsWith(END)) { | |
| LogMonitor.getInstance().removeMonitor(); | |
| } | |
| } | |
| }); | |
| } | |
| // BlockDetectByChoreographer | |
| // public static void start() { | |
| // Choreographer.getInstance() | |
| // .postFrameCallback(new Choreographer.FrameCallback() { | |
| // @Override | |
| // public void doFrame(long l) { | |
| // if (LogMonitor.getInstance().isMonitor()) { | |
| // LogMonitor.getInstance().removeMonitor(); | |
| // } | |
| // LogMonitor.getInstance().startMonitor(); | |
| // Choreographer.getInstance().postFrameCallback(this); | |
| // } | |
| // }); | |
| // } | |
| private static class LogMonitor { | |
| private static LogMonitor sInstance = new LogMonitor(); | |
| private HandlerThread mLogThread = new HandlerThread("log"); | |
| private Handler mIoHandler; | |
| private static final long TIME_BLOCK = 1000L; | |
| private LogMonitor() { | |
| mLogThread.start(); | |
| mIoHandler = new Handler(mLogThread.getLooper()); | |
| } | |
| private static Runnable mLogRunnable = new Runnable() { | |
| @Override | |
| public void run() { | |
| StringBuilder sb = new StringBuilder(); | |
| StackTraceElement[] stackTrace = Looper.getMainLooper().getThread().getStackTrace(); | |
| for (StackTraceElement s : stackTrace) { | |
| sb.append(s.toString() + "\n"); | |
| } | |
| Log.e("TAG", sb.toString()); | |
| } | |
| }; | |
| public static LogMonitor getInstance() { | |
| return sInstance; | |
| } | |
| public boolean isMonitor() { | |
| return mIoHandler.hasCallbacks(mLogRunnable); | |
| } | |
| public void startMonitor() { | |
| mIoHandler.postDelayed(mLogRunnable, TIME_BLOCK); | |
| } | |
| public void removeMonitor() { | |
| mIoHandler.removeCallbacks(mLogRunnable); | |
| } | |
| } | |
| } |
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