内存泄露监测工具LeakCanary的使用

1. 用法: 

1)在build.gradle中加入引用，不同的编译使用不同的引用：

dependencies {

debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3'

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

}

2)在Application中：

public classExampleApplicationextendsApplication {

privateRefWatchermRefWatcher;

public staticRefWatchergetRefWatcher(Context context) {

ExampleApplication application = (ExampleApplication) context.getApplicationContext();

returnapplication.mRefWatcher;

}

@Override

public voidonCreate() {

super.onCreate();

mRefWatcher= LeakCanary.install(this);

}

}

3)在Activity中LeakCanary 会自动监测泄露情况

4)在Fragment中的onDestroy方法中调用:

RefWatcher refWatcher = ExampleApplication.getRefWatcher(this);

refWatcher.watch(this);

5)监控其他泄漏

RefWatcher refWatcher = MyApplication.refWatcher;

refWatcher.watch(someObjNeedGced);

6)如果有泄漏则输出:

01-06 14:11:35.255 2628-3247/demo.leakcanary.srain.in.leakcanarydemo D/LeakCanary: In demo.leakcanary.srain.in.leakcanarydemo:1.0:1.

* demo.leakcanary.srain.in.leakcanarydemo.TestActivity has leaked:

* GC ROOT static demo.leakcanary.srain.in.leakcanarydemo.TestDataModel.sInstance

* references demo.leakcanary.srain.in.leakcanarydemo.TestDataModel.mRetainedTextView

* references android.widget.TextView.mContext

* leaks demo.leakcanary.srain.in.leakcanarydemo.TestActivity instance

* Reference Key: 8e73e5d3-f2b7-42bf-8b65-54aba952525a

* Device: ZTE ZTE ZTE STAR P898S10

* Android Version: 4.4.2 API: 19

* Durations: watch=5076ms, gc=151ms, heap dump=312ms, analysis=10109ms

根据输出的泄露项进行优化,

2.总结:

我对LeakCanary的使用还处于初级阶段,在以后的编程中,会尽量使用这个工具进行优化,将会有更加复杂的应用环境,对于这个工具理解的不足,也会在以后的使用中进行改进.