java - Android AlertDialog 因 BadTokenException 崩溃？

Question

这是我的第一篇文章，所以请耐心等待。我是一名高中开发人员，最近在 Play 商店发布了一款 Android 应用程序。我正在使用 Crashlytics 来捕获异常，由于某种原因它会抛出此错误。

Fatal Exception: android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@1989547c is not valid; is your activity running?

专门针对 LG D855、Nexus 5 和华为 PLK AL10 版本 5.0、5.0.2、5.1.1 和 6.0.1 进行了报道。我在网上查了一下，发现当 Activity 不存在时就会发生这种情况。该错误发生在应用程序首次启动时。

以下是我用于警报对话框的代码，它只是询问用户是否想查看教程(y/n)

public void showTutorialDialog() {
    AlertDialog tutorialDialog = new AlertDialog.Builder(this)
            .setTitle(R.string.tutorial_question_title)
            .setCancelable(false)
            .setMessage(R.string.tutorial_question)
            .setPositiveButton(getResources().getString(R.string.tutorial_question_pos), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // Take to tutorial
                    // Assume isn't backer for now..
                    finish();
                    Intent i = new Intent(StartupActivity.this, TutorialActivity.class);
                    i.putExtra("from", "StartupActivity");
                    startActivity(i);
                }
            })
            .setNegativeButton(getResources().getString(R.string.tutorial_question_neg), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // No tutorial, ask if they are a backer
                    showBackerDialog();
                }
            }).show();

首次启动应用程序时，我在单独的类中使用 IabHelper 加载用户购买详细信息。这个类称为PurchaseRetriever，异步检索用户购买的内容并将其存储在ArrayList 中。这就是我的代码的工作原理。

            if (mManager.isUserFirstTime()) {
                // Initialize purchase retriever.
                // The rest will be done when the observer reports that purchase data has been retrieved.
                mPurchases = PurchaseRetriever.getInstance(StartupActivity.this);
                mPurchases.addObserver(new FirstStartupObserver(this));
                StartupManager.FIRST = true;
                loadImageContent();

它使用观察者模式运行，因此当查询购买详细信息时，它会调用 FirstStartupObserver 中的 update() 方法，然后该方法通过对 StartupActivity 的引用，在发生错误的地方调用 startupActivity.showTutorialDialog();。

我已经在我和我的 friend 个人拥有的多台设备(Nexus 6、Nexus 5、Nexus 7 平板电脑、Samsung Galaxy Tab、Samsung Remote Lab 上的各种设备)上对其进行了测试，但在我这边运行良好...任何建议表示赞赏，谢谢。

编辑:这是 StartupActivity。

/**
 * Main startup activity. Determines which activity to launch.
 * Puts the user in one place or another depending on if they are a backer.
 */
public class StartupActivity extends AppCompatActivity {

    private StartupManager mManager;
    private ProgressBar bar;

    // --- Used if first time app loading to query purchase info
    private PurchaseRetriever mPurchases;


    @Override
    protected void onCreate(Bundle savedInstanceState) {

        // Used in either cases
        // If first time, displayed, if not, hidden//
        //hideNavBar();
        User.init(this);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_startup);
        bar = (ProgressBar)this.findViewById(R.id.progressBar);
        mManager = new StartupManager(this);

        // Returns true if data was corrupt before
        if (mManager.isDataCorrupt()) {
            bar.setVisibility(View.VISIBLE);
            loadImageContent();
            // Reset watch to default black
            // Internally starts NewMainActivity
            ErrorManager.fixCorruptData(bar, this);
        } else {
            // Stays true until user selects watch
            if (mManager.isUserFirstTime()) {
                // Initialize purchase retriever.
                // The rest will be done when the observer reports that purchase data has been retrieved.
                mPurchases = PurchaseRetriever.getInstance(StartupActivity.this);
                mPurchases.addObserver(new FirstStartupObserver(this));
                StartupManager.FIRST = true;
                loadImageContent();
            } else {
                // NOT first time starting app.
                mPurchases = PurchaseRetriever.getInstance(StartupActivity.this);
                mPurchases.addObserver(new AfterFirstStartupObserver(this));
                loadImageContent();
            }
        }


    }

    // Two main dialogs used
    public void showTutorialDialog() {
        AlertDialog tutorialDialog = new AlertDialog.Builder(this)
                .setTitle(R.string.tutorial_question_title)
                .setCancelable(false)
                .setMessage(R.string.tutorial_question)
                .setPositiveButton(getResources().getString(R.string.tutorial_question_pos), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // Take to tutorial
                        // Assume isn't backer for now..
                        finish();
                        Intent i = new Intent(StartupActivity.this, TutorialActivity.class);
                        i.putExtra("from", "StartupActivity");
                        startActivity(i);
                    }
                })
                .setNegativeButton(getResources().getString(R.string.tutorial_question_neg), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // No tutorial, ask if they are a backer
                        showBackerDialog();
                    }
                }).show();

        tutorialDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(Color.RED);
        tutorialDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.RED);
    }
    private void showBackerDialog() {
        // Show AlertDialog ask if they are kickstarter backer
        AlertDialog askDialog = new AlertDialog.Builder(this)
                .setTitle(getResources().getString(R.string.startup_dialog_title))
                .setCancelable(false)
                .setMessage(getResources().getString(R.string.startup_dialog_message))
                .setPositiveButton(getResources().getString(R.string.startup_dialog_pos), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // User is a backer, take to watch chooser screen, then it takes to login screen
                        // Also look at Timer with TimerTask
                        new Thread(new Runnable() {
                            @Override
                            public void run() {
                                try {
                                    Intent i = new Intent(StartupActivity.this, WatchChooserActivity.class);
                                    i.putExtra("from", "StartupActivityBacker");
                                    startActivity(i);
                                } finally {
                                    finish();
                                }
                            }
                        }).start();
                    }
                })
                .setNegativeButton(getResources().getString(R.string.startup_dialog_neg), new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // User is not a backer, take to MainActivity

                        new Thread(new Runnable() {

                            @Override
                            public void run() {
                                try {
                                    Intent i = new Intent(StartupActivity.this, WatchChooserActivity.class);
                                    i.putExtra("from", "StartupActivityNonBacker");
                                    startActivity(i);
                                } finally {
                                    finish();
                                }
                            }
                        }).start();
                    }
                }).show();

        askDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(Color.RED);
        askDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.RED);
    }

这是 FirstStartupObserver 的代码。'

public class FirstStartupObserver implements Observer {
    private StartupActivity startupActivity;
    public FirstStartupObserver(StartupActivity startupActivity) {
        this.startupActivity = startupActivity;
    }

    // Called when the observable is done loading purchase detail
    // (Only called when user runs app first time)
    @Override
    public void update(Observable observable, Object data) {
        // Set default first-time watch
        //  Query product data (the Watchfaces purchased in the form of a WatchFace object)
        PurchaseRetriever mPurchases = PurchaseRetriever.getInstance(startupActivity);
        if (mPurchases.hasSuccess()) {
            ArrayList<DynamicLoader.WatchFace> facesOwned = mPurchases.getPurchasedFaces();
            for (DynamicLoader.WatchFace f : facesOwned) {
                f.setPurchased(true);
            }
            // Check if coming from v1.4
            if (UpgradeManager.isUpgrading(startupActivity)) {
                // Then it calls the code below, but after the async task.
                String accessCode = UpgradeManager.getOldAccessCode(startupActivity);
                String accessToken = UpgradeManager.getOldAccessToken(startupActivity);
                UpgradeManager.migrateBacker(startupActivity, accessCode, accessToken);
            } else {
                // Ask if they want to see tutorial.
                // This is when the exception occurs!!!

                startupActivity.showTutorialDialog();

            }
            return;
        } else {
            Log.d("TAG", "Showing fail dialog");
            DialogUtils.showIabFailDialog(startupActivity, this);
        }
    }
}

Answer 1

token android.os.BinderProxy@1989547c is not valid; is your activity running?

这意味着您试图在 Activity 被销毁时或销毁后显示弹出窗口。

您可以检查您的 Activity 是否isDestroyed，如下所示:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 && !isDestroyed()) {
    showTutorialDialog();
}

如果您支持低于 api 17 的设备，则可以尝试使用 isFinishing 在其他情况下。我没有测试它是否按预期工作。 (如果我错了，请纠正我。)

else {
        if (!isFinishing()) { 
             showTutorialDialog();
         }
   }

或者为了快速修复，您可以用 try catch 包围