Android内存溢出

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最近的视频项目遇到了内存泄漏，找问题真是蛋疼的事。
主要就是context没有释放，handler的不合理使用，bitmap没有回收，connection没有close等
首先纪录一下sdk官方写handler的方式

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public abstract class WeakHandler<T> extends Handler {
    private WeakReference<T> mOwner;

    public WeakHandler(T owner) {
        mOwner = new WeakReference<T>(owner);
    }

    public T getOwner() {
        return mOwner.get();
    }
}

activity中

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public abstract class BaseActivity extends AppCompatActivity {

private final UIActivityHandler uiHandler = new UIActivityHandler(this);

    public static class UIActivityHandler extends
            WeakHandler<BaseActivity> {

        public UIActivityHandler(BaseActivity owner) {
            super(owner);
        }

        public void handleMessage(Message msg) {
            BaseActivity owner = getOwner();
            if (owner == null) {
                return;
            }
            owner.handleUIMessage(msg);
        }
    }
      protected final void postMessageDelay(int what, Object object,
                                          long delayMillis) {
        Message msg = Message.obtain();
        msg.what = what;
        msg.obj = object;
        uiHandler.sendMessageDelayed(msg, delayMillis);
    }

    protected final void postMessage(int what, Object object) {
        Message.obtain(uiHandler, what, object).sendToTarget();
    }

    public void handleUIMessage(Message msg) {

    }
}

最后积累一个内存泄露监测工具，square公司的LeakCanary，square确实开源了些好用的东西。
LeakCanary作为一个简单粗暴的工具,用法也相当简单
在build.gradle中引入LeakCanary

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debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3'  
      releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.3'

一个是debug包,一个是release包的,从引入包的结构也能看出端倪
由于LeakCanary是测试整个app的内存泄露情况,所以你需要在你的application中启动它

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package com.zimo.guo;  
    
  import android.app.Application;  
    
  import com.squareup.leakcanary.LeakCanary;  
    
  /** 
   * Created by zimo on 15/8/7. 
   */  
  public class MyApplication extends Application {  
    
      @Override  
      public void onCreate() {  
          super.onCreate();  
          LeakCanary.install(this);  
      }  
  }

这么有逼格的工具,赶紧来试试吧,要想使你的app的内存泄露灰飞烟灭,try it