android Application类中的ProgressDialog导致内存泄漏

Question

我在Lottie的Application类中使用进度对话框，但是显示进度对话框时会发生内存泄漏。我该如何解决？

我的申请代码是：

public class AppController extends Application {
public static final String TAG = AppController.class.getSimpleName();
private static AppController mInstance;
AppCompatDialog progressDialog;

@Override
public void onCreate() {
    super.onCreate();
    if (LeakCanary.isInAnalyzerProcess(this)) {
        // This process is dedicated to LeakCanary for heap analysis.
        // You should not init your app in this process.
        return;
    }
    LeakCanary.install(this);
    // Normal app init code...

    mInstance = this;
}

public static synchronized AppController getInstance() {
    return mInstance;
}

/**
 * Progress Dialog
 */
public void progressON(Activity activity) {
    if (activity == null) {
        return;
    }
    if (progressDialog != null && progressDialog.isShowing()) {
    } else {
        progressDialog = new AppCompatDialog(activity);
        progressDialog.setCancelable(false);
        progressDialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
        progressDialog.setContentView(R.layout.progress_loading);
        progressDialog.show();
    }

    final LottieAnimationView lottieAnimationView = (LottieAnimationView) progressDialog.findViewById(R.id.progress_lottie);
    lottieAnimationView.playAnimation();

}

public void progressOFF() {
    if (progressDialog != null && progressDialog.isShowing()) {
        progressDialog.dismiss();
    }
}
}

以及当我使用开/关进度时：

AppController.getInstance().progressON(PartnerDetailActivity.this);
AppController.getInstance().progressOFF();

错误图片是：

Answer 1

为什么在应用程序类中使用它？我认为您泄漏活动是因为您在Application中保存了对progressDialog的引用，而在此处保存了对活动的引用。

progressDialog = new AppCompatDialog(activity);

您应该在progressDialog = null之后调用progressDialog.dismiss();，并将其移出应用程序到单独的类中，因为您要破坏SOLID。