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[英]flutter: getting gradle error while running my flutter app for the first time
[英]Error while running the App for the first time can not cast issue
E/AndroidRuntime: FATAL EXCEPTION: main Process: de.mywoofi.app, PID: 17970 java.lang.RuntimeException: Unable to instantiate application de.mywoofi.app.MyWoofiApplication_: java.lang.ClassCastException: de.mywoofi.app.MyWoofiApplication_ cannot be cast to android.app.Application at android.app.LoadedApk.makeApplication(LoadedApk.java:1069) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5842) at android.app.ActivityThread.access$1100(ActivityThread.java:199) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) Caused by: java.lang.ClassCastException: de.mywoofi.app.MyWoofiApplication_ cannot be cast to android.app.Application at android.app.AppComponentFactory.instantiateApplication(AppComponentFactory.java:50) at android.support.v4.app.CoreComponentFactory.instantiateApplication(CoreComponentFactory.java:49) at android.app.Instrumentation.newApplication(Instrumentation.java:1120) at android.app.LoadedApk.makeApplication(LoadedApk.java:1061) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5842) at android.app.ActivityThread.access$1100(ActivityThread.java:199) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
問題是,我不知道確切的解決方案是什么。 我已經嘗試過此頁面上的許多“解決方案”,但也許我很愚蠢以解決該問題。 如果有任何要求提供某些代碼的要求,請詢問。
謝謝你的幫助!
要求的班級(縮短)
@EActivity(de.mywoofi.app.R.layout.activity_main)
public class MyWoofiApplication extends Activity
{ [...]
}
和演員:
<application
android:name=".MyWoofiApplication_"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
tools:replace="android:icon"
android:fullBackupContent="true"
tools:ignore="AllowBackup,GoogleAppIndexingWarning">
<activity
android:name=".ui.activity.SplashActivity_"
android:label="@string/app_name"
android:theme="@style/AppTheme.Full"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
我更新的清單
<application
android:name=".ApplicationClass"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
tools:replace="android:icon"
android:fullBackupContent="true"
tools:ignore="AllowBackup,GoogleAppIndexingWarning">
<activity
android:name=".ui.activity.SplashActivity_"
android:label="@string/app_name"
android:theme="@style/AppTheme.Full"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
這是我的ApplicationClass.java
public class ApplicationClass extends Application{
@Override
public void onCreate(){
super.onCreate();
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectAll()
.penaltyLog()
.build());
}
}
以android名稱命名-在Manifest.xml中,您擁有此MyWoofiApplication_
但僅需要此MyWoofiApplication
對嗎?
您在清單中有這一行:
<application
android:name=".MyWoofiApplication_"
因此MyWoofiApplication_
應該擴展android.app.Application
但沒有擴展,因此您遇到了以下異常:
de.mywoofi.app.MyWoofiApplication_ cannot be cast to android.app.Application
應用程序需要擴展Application並在清單文件中提到,MainActivity擴展Activity
因為您的MyWoofiApplication_不是擴展應用程序,而是擴展活動,所以出現了錯誤,所以這就是您收到此錯誤的原因:
de.mywoofi.app.MyWoofiApplication_ cannot be cast to android.app.Application
應用類別
public class ApplicationClass extends Application {
@Override
public void onCreate() {
super.onCreate();
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectAll()
.penaltyLog()
.build());
}
}
清單文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="YOUR_PACKAGE_NAME">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:name=".ApplicationClass"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:largeHeap="true"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".SplashActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@style/AppTheme.NoActionBar"
android:windowSoftInputMode="adjustResize" />
</application>
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
setContentView(R.layout.activity_main);
}
}
希望您現在就明白了,對您有所幫助。
MyWoofiApplication_正在擴展Activity,因此您無法將其強制轉換為Application。
您可以從應用程序標記中刪除android:name =“。MyWoofiApplication_”來解決您的問題。
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