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);
}
}
}
最佳答案
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
关于java - Android AlertDialog 因 BadTokenException 崩溃？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34317247/