该应用程序可在Android的早期版本上运行,但在Oreo上无法运行。它是带有WebView
的Notification
。我一直在研究此错误,但没有发现任何类似的内容。
堆栈跟踪:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: net.oneteamit.tk, PID: 3171
java.lang.RuntimeException: Unable to start activity ComponentInfo{net.oneteamit.tk/net.oneteamit.tk.MainActivity}:
java.lang.IllegalArgumentException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.IllegalArgumentException
at android.os.Parcel.readException(Parcel.java:1946)
at android.os.Parcel.readException(Parcel.java:1888)
at android.app.INotificationManager$Stub$Proxy.createNotificationChannels(INotificationManager.java:1418)
at android.app.NotificationManager.createNotificationChannels(NotificationManager.java:446)
at android.app.NotificationManager.createNotificationChannel(NotificationManager.java:434)
at net.oneteamit.tk.MainActivity.onCreate(MainActivity.java:47)
at android.app.Activity.performCreate(Activity.java:6975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
MainActivity
:
public class MainActivity extends AppCompatActivity {
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.loadUrl("My test URL");
mWebView.setWebViewClient(new WebViewClient());
mWebView.getSettings().setAppCacheEnabled(false);
mWebView.clearCache(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
// Create channel to show notifications.
String channelId = getString(R.string.default_notification_channel_id);
String channelName = getString(R.string.default_notification_channel_name);
NotificationManager notificationManager =
getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(
new NotificationChannel(channelId,
channelName,
NotificationManager.IMPORTANCE_LOW));
}
mWebView.getSettings().setUseWideViewPort(true);
mWebView.getSettings().setLoadWithOverviewMode(true);
mWebView.setInitialScale(1);
mWebView.getSettings().setBuiltInZoomControls(true);
}
}
通道名称无效时,会发生此异常。我可以通过使用空的通道名称运行来重现堆栈跟踪:
<string name="default_notification_channel_name"></string>
检查为default_notification_channel_name
定义的值,并将其更改为有效值。
AppCompactActivity向后兼容但不向前兼容,是否有您正在使用的组件不受Android 8.0的支持,或者Android Studio或IDE是Oreo的最新版本。
<string name="app_name"></string>
是此错误的原因。空字符串将导致致命异常。