Using
wifiManager.startScan();
ScanResultsList scanresultsList = wifiManager.getScanResults();
I obtain a list of scan results defined by ScanResult objects.
Problem:
Refering to scanResult.channelWidth I am presented with an error:
scanResult.channelWidth = No such instance field: 'channelWidth'
and
Exception
java.lang.NoSuchFieldError: No instance field channelWidth of type I
in class Landroid/net/wifi/ScanResult; or its superclasses
(declaration of 'android.net.wifi.ScanResult' appears in
/system/framework/framework.jar)
Stacktrace:
06-14 02:57:19.732 27116-27116/com.cynetstudios.frequencyselector E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.cynetstudios.frequencyselector, PID: 27116
java.lang.NoSuchFieldError: No instance field channelWidth of type I in class Landroid/net/wifi/ScanResult; or its superclasses (declaration of 'android.net.wifi.ScanResult' appears in /system/framework/framework.jar)
at com.cynetstudios.frequencyselector.main.initWiFiArrays(main.java:161)
at com.cynetstudios.frequencyselector.main.access$000(main.java:35)
at com.cynetstudios.frequencyselector.main$1$1.run(main.java:115)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5291)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
I require this int value for further processing,
what is causing this no instance field?
This may be useful,check this link
https://developer.android.com/reference/android/net/wifi/ScanResult.html>
Related
LOGCAT error prevents me from opening the MAP activity and stops
working.
2019-07-03 17:12:01.642 29273-29273/com.example.ess E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ess, PID: 29273
java.lang.IllegalStateException: Could not find method map(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatImageView with id 'imageView5'
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:424)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:381)
at android.view.View.performClick(View.java:6993)
at android.view.View$PerformClick.run(View.java:26512)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7025)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
You applied the android:onClick=map attribute in your layout xml.
As you can see in the log it's on the ImageView android.support.v7.widget.AppCompatImageView with the android:id=#+id/imageView5
So either:
remove this line: android:onClick="map" and handle clicks with an OnClickListener
create this method in the Activity where you applied the layout:
public void map(View v) {}
Can anyone Provide proguard rules for Tenor Sdk android. There are no rules provided for there sdk on git. The link for git repository is :
https://github.com/Tenor-Inc/tenor-android-core
Following is the crash exception I am getting :
FATAL EXCEPTION: main
Process: com, PID: 14520
java.lang.RuntimeException: Unable to start activity ComponentInfo{com/com.ui.activities.GifListActivity}: java.lang.IllegalArgumentException: Unable to create converter for class com.tenor.android.core.d.a.c
for method d.a
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2434)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5525)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
Caused by: java.lang.IllegalArgumentException: Unable to create converter for class com.tenor.android.core.d.a.c
for method d.a
at h.n$a.a(ServiceMethod.java:752)
at h.n$a.c(ServiceMethod.java:738)
at h.n$a.a(ServiceMethod.java:169)
at h.m.a(Retrofit.java:170)
at h.m$1.invoke(Retrofit.java:147)
at java.lang.reflect.Proxy.invoke(Proxy.java:393)
at $Proxy0.a(Unknown Source)
at com.i.b.a(GiffRetrievalService.java:38)
at com.ui.activities.GifListActivity.a(GifListActivity.java:93)
at com.ui.activities.GifListActivity.a(GifListActivity.java:63)
at com.ui.activities.GifListActivity.onCreate(GifListActivity.java:58)
at android.app.Activity.performCreate(Activity.java:6272)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
... 9 more
Caused by: java.lang.IllegalArgumentException: class com.tenor.android.core.b.a.b declares multiple JSON fields named a
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:170)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.f.a(Gson.java:423)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:115)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:164)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.f.a(Gson.java:423)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory.a(CollectionTypeAdapterFactory.java:53)
at com.google.gson.f.a(Gson.java:423)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:115)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:164)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.f.a(Gson.java:423)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory.a(CollectionTypeAdapterFactory.java:53)
at com.google.gson.f.a(Gson.java:423)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:115)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:164)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.a(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.f.a(Gson.java:423)
at h.a.a.a.a(GsonConverterFactory.java:64)
at h.m.a(Retrofit.java:330)
at h.m.b(Retrofit.java:313)
at h.n$a.c(ServiceMethod.java:736)
... 21 more
Thanks
Use this rule
-keep class com.tenor.android.core.** { *; }
This will keep away all classed inside com.tenor.android.core package from getting proguarded
I tried to build android app for android box. In my scenario my app need to stream live TV channels by using HDMI input.Why am I getting this kind of exception?
Any help to slow this error would be highly appreciated!
Thank you!
Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{eu.danman.zidostreamer.zidostreamer/eu.danman.zidostreamer.zidostreamer.MainActivity}: java.lang.SecurityException: Binder invocation to an incorrect interface
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5458)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by java.lang.SecurityException: Binder invocation to an incorrect interface
at android.os.Parcel.readException(Parcel.java:1620)
at android.os.Parcel.readException(Parcel.java:1573)
at com.mstar.android.tv.ITvService$Stub$Proxy.getTvCommon(ITvService.java:365)
at com.mstar.android.tv.TvManager.getTvCommon(TvManager.java:205)
at com.mstar.android.tv.TvCommonManager.getService(TvCommonManager.java:136)
at com.mstar.android.tv.TvCommonManager.getCurrentInputSource(TvCommonManager.java:166)
at eu.danman.zidostreamer.zidostreamer.MainActivity.changeInputSource(MainActivity.java:49)
at eu.danman.zidostreamer.zidostreamer.MainActivity.enableHDMI(MainActivity.java:69)
at eu.danman.zidostreamer.zidostreamer.MainActivity.onCreate(MainActivity.java:89)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2370)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5458)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Hello everyone i've got this error a nullPointerException error after i tried to integrate the android-page-transition and i couldn't find it's cause
this is the code where the error is shown PS: it's the same exact caude in the library i just integrated the code into mywork
/**
* Réglage Menu immersive title
*/
private void dealStatusBar() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
int statusBarHeight = getStatusBarHeight();
ViewGroup.LayoutParams lp = positionView.getLayoutParams();
lp.height = statusBarHeight;
positionView.setLayoutParams(lp);
}
}
this is the error i get when i run
11-19 12:11:30.781 16089-16089/mobile.esprit.tn.mobileteam E/AndroidRuntime: FATAL EXCEPTION: main
Process: mobile.esprit.tn.mobileteam, PID: 16089
java.lang.RuntimeException: Unable to start activity ComponentInfo{mobile.esprit.tn.mobileteam/mobile.esprit.tn.mobileteam.Activities.Project.PrjectsCardViews}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.view.View.getLayoutParams()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2693)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.view.View.getLayoutParams()' on a null object reference
at mobile.esprit.tn.mobileteam.Activities.Project.PrjectsCardViews.dealStatusBar(PrjectsCardViews.java:129)
at mobile.esprit.tn.mobileteam.Activities.Project.PrjectsCardViews.onCreate(PrjectsCardViews.java:54)
at android.app.Activity.performCreate(Activity.java:6289)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)
the PrjectsCardViews.java:129 is the code i posted above
ok i found the problem it was a dump fault caused by the copy and paste , i dident refere the oncreate to the necessary activity layout
You might have copied the projet but you may forgotten to change
<com.stone.transition.DragLayout
android:id="#+id/drag_layout" when you merged the code in your project check this out it will work
I have created a class (GameHelper) which extends SQLiteOpenHelper. I want it to be a singleton, so I can create it and have it store the contents of the database during runtime, with all other classes referencing it.
I followed the advice here, (Approach 1).
So I when I need to reference the database, I don't create a new instance of GameHelper, I call getInstance. Here is the relevant code:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game_info);
populate(getIntent().getStringExtra("game"), getIntent().getStringExtra("game"));
}
public void populate(String gameToGo, String game) {
DataTable game = gameHelper.getgame(game, gameToGo); //GameInfo.java:12
TextView tv = (TextView) findViewById(R.id.tableId);
String text = game.TABLE_ID;
tv.setText(text);
}
Which refers to the following method in GameHelper:
private static GameHelper sInstance;
public static synchronized GameHelper getInstance(Context context) {
// Use the application context, which will ensure that you
// don't accidentally leak an Activity's context.
// See this article for more information: http://bit.ly/6LRzfx
if (sInstance == null) {
sInstance = new GameHelper(context.getApplicationContext()); //GameHelper.java:60
}
return sInstance;
}
The problem occurs on the line sInstance = new GameHelper(context.getApplicationContext());, which throws a NullPointerException, as shown here:
11-08 10:14:54.974 16214-16214/com.example.android.whichgame E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.android.whichgame, PID: 16214
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.android.whichgame/com.example.android.whichgame.GameInfo}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2177)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2301)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1246)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5212)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:109)
at com.example.android.whichgame.GameHelper.getInstance(GameHelper.java:60)
at com.example.android.whichgame.GameInfo.<init>(GameInfo.java:12)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1208)
at android.app.Instrumentation.newActivity(Instrumentation.java:1062)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2155)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2301)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1246)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5212)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
I have spent all day scouring the internet for answers, and while I have found numerous responses to similar problems, I haven't found anything that has helped. The best and most popular answer seems to be that I need to set android:name for <application> in AndroidManifest, but herein lies another problem. I'm working in Android Studio, and when I try to add my application name, the name turns red. I suppose it's possible that I'm doing it wrong! My package (as defined in the manifest) is "com.example.android.whichgame", though the app itself (and the folder it is in) is called Whichgame.
So my question is this: What am I missing that is causing getApplicationContext() to kick out the NPE when called through getInstance? And if it is because I haven't set android:name, what is causing Studio and the compiler to reject the name?
You're using your GameInfo activity as a Context too early at initialization phase. Postpone the initialization that requires a valid Context to onCreate() or later in the activity lifecycle.