public void doSomeWork() {
    // 這里執(zhí)行耗時(shí)操作
    // ...
    // 下面的代碼會(huì)導(dǎo)致卡頓
    updateUI();
}

public class MyActivity extends AppCompatActivity {
    private static List<SomeObject> myList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // 向myList添加數(shù)據(jù)，但沒有清除
        myList.add(new SomeObject());
    }
}

<RelativeLayout>
    <LinearLayout>
        <ImageView />
        <TextView />
        <!-- 更多視圖 -->
    </LinearLayout>
</RelativeLayout>

// 創(chuàng)建大量對(duì)象
List<Object> objects = new ArrayList<>();
for (int i = 0; i < 10000; i++) {
    objects.add(new Object());
}

// 創(chuàng)建一個(gè)協(xié)程作用域
val job = CoroutineScope(Dispatchers.IO).launch {
    // 在后臺(tái)線程執(zhí)行后臺(tái)任務(wù)
    val result = performBackgroundTask()
    
    // 切換到主線程更新UI
    withContext(Dispatchers.Main) {
        updateUI(result)
    }
}

// 取消協(xié)程
fun cancelJob() {
    job.cancel()
}

suspend fun performBackgroundTask(): String {
    // 執(zhí)行后臺(tái)任務(wù)
    return "Background task result"
}

fun updateUI(result: String) {
    // 更新UI
}

public class MyActivity extends AppCompatActivity {
    private List<SomeObject> myList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        myList.add(new SomeObject());
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        myList.clear(); // 清除引用
    }
}

<ConstraintLayout>
    <ImageView />
    <TextView />
    <!-- 更少的視圖層次 -->
</ConstraintLayout>

// 使用對(duì)象池來重用對(duì)象
ObjectPool objectPool = new ObjectPool();
for (int i = 0; i < 10000; i++) {
    Object obj = objectPool.acquireObject();
    // 使用對(duì)象
    objectPool.releaseObject(obj);
}

for (;;) {
    Message msg = queue.next(); 

    final Printer logging = me.mLogging;
    if (logging != null) {
        logging.println(">>>>> Dispatching to " + msg.target + " " +
                msg.callback + ": " + msg.what);
    }

    msg.target.dispatchMessage(msg);

    if (logging != null) {
        logging.println("<<<<< Finished to " + msg.target + " " + msg.callback);
    }
}

Looper.getMainLooper().setMessageLogging(new LogPrinter(new String("MyApp"), Log.DEBUG) {
    @Override
    public void println(String msg) {
        if (msg.startsWith(">>>>> Dispatching to ")) {
            // 記錄消息開始處理時(shí)間
            startTime = System.currentTimeMillis();
        } else if (msg.startsWith("<<<<< Finished to ")) {
            // 記錄消息結(jié)束處理時(shí)間
            long endTime = System.currentTimeMillis();
            // 解析消息信息
            String messageInfo = msg.substring("<<<<< Finished to ".length());
            String[] parts = messageInfo.split(" ");
            String handlerInfo = parts[0];
            String messageInfo = parts[1];
            // 計(jì)算消息處理時(shí)間
            long executionTime = endTime - startTime;
            // 記錄消息處理時(shí)間
            Log.d("DispatchTime", "Handler: " + handlerInfo + ", Message: " + messageInfo + ", Execution Time: " + executionTime + "ms");
        }
    }
});