LeakCanary 原理浅析

在Application里初始化
this.mRefWatcher = BuildConfig.DEBUG ? LeakCanary.install(this) : RefWatcher.DISABLED;

fragment的onDestroy

@Override
    public void onDestroy() {
        super.onDestroy();
        RefWatcher refWatcher = App.getMyApplicationContext().getRefWatcher();
        refWatcher.watch(this);
    }