內(nèi)存泄露的例子分析

1、（MemorygcrootsGCDalvikVMGCjavaheapDalvikVMHeapGrowthLimit（MemorygcrootsGCDalvikVMGCjavaheapDalvikVMHeapGrowthLimitheapDalvikVMHeapGrowthLimit一靜態(tài)變量引起的內(nèi)存泄。1. Context public class IMManager privateContextcontext;privateic IMManager public sicIMManagergetInstance(Contextcontext) if (mInstance = null) 被。

2、被。public class IMManager privateContextcontext;privateic IMManager public sicIMManagergetInstance(Contextcontext) if (mInstance = null) synchronized(IMManager.class) if (mInstance = null)/將傳入的context換成Applicationcontext mInstance = newreturn privateIMManager(Contextcontext) this.context = context;sy

3、nchronized(IMManager.class) if (mInstance = null)mInstance=newreturn privateIMManager(Contextcontext) this.context = context;二非靜類引起的內(nèi)存泄。二非靜類引起的內(nèi)存泄。2.public class LeakAty extendivity protected void onCreate(Bundle savedInstane) public void test()類實例LeakAty.this,所以會導致內(nèi)存漏newThread(newRunnable() publicv

4、oidrun() while (true) try catch (erruptedExceptione) 類void scheduleTimer() newTimer().schedule(new類void scheduleTimer() newTimer().schedule(newTimerTask() publicvoidrun() while (true) ;,Long.MAX_VALUEpublic class LeakAty extendivity protected void onCreate(Bundle savedInstane) /加上ic，變成靜public sic vo

5、id test() newThread(newRunnable()publicvoidrun() while (true) try catch (erruptedExceptione) Handler publicclassLeakAtyextend ivity protectedvoid onCreate(Bundlee) private Handler mHandler = new Handler() publicvoidhandleMessage(android.os.Messageswitch(msg.whatHandler publicclassLeakAtyextend ivity

6、 protectedvoid onCreate(Bundlee) private Handler mHandler = new Handler() publicvoidhandleMessage(android.os.Messageswitch(msg.what) case 0:/ 刷新數(shù)privatevoid fetchData()/獲取數(shù)mHandler比如尤其是ostDelayed(sRunnable,1000* 60*View ttButton = findViewById(R.id.tt_button); ttButton.setOnClickListener(newView.OnC

7、lickListener()publicvoidonClick(Viewv) public class LeakAty extendivitypublic class LeakAty extendivity private TextView tvResult;private MyHandlerprotected void onCreate(Bundle savedInstane) tvResult=(TextView)findViewById(R.id.tvResult); handler = new MyHandler(this);/第一步，將Handler改成靜類privateicclas

8、s MyHandlerextends Handler/第二步，將需Activity的地方，改成private WeakReferencepublic MyHandler(LeakAtyaty)this.atyInstance =new publicvoidhandleMessage(Messagemsg) LeakAtyaty=atyInstance=null?null:/如果Activity回收了，則不處理這些消if(aty=null|aty.isFinishing() aty.tvResult.setText(fetchdataprivatevoid fetchData()/ 獲取數(shù)pro

9、tectedvoid onDestroy()/第三步，在Activity退出的時候移除回里面的哥們Activity 都Handler 還想繼續(xù)玩什么？用非靜態(tài)里面的哥們Activity 都Handler 還想繼續(xù)玩什么？用非靜態(tài)三資源未關閉引起的內(nèi)存泄四不要用未移void registerListener() SensorManagersensorManager=(SensorManager) Sensor sensor = sensorManager.getDefaulsensorManager.registerListener(this, sensor,View smButton = findViewById(R.id.sm_button); smButton.setOnClickListener(newView.OnClickListener()1. 調(diào) 用 , 而 沒 有 調(diào) 系統(tǒng)中(如信號強度等)LockScreen eListener 系統(tǒng)中(如信號強度等)LockScreen eListener 的時候就會創(chuàng)建一個LockScreen對象而當鎖屏界的時候LockScreen對象就掉。 但是如果 L