首先新建一个工具类AppContext
import android.content.Context;
public class AppContext extends android.app.Application {
private static Context appContext;
@Override
public void onCreate() {
super.onCreate();
appContext = getApplicationContext();
}
public static Context getAppContext(){
return appContext;
}
@Override
public void onLowMemory() {
super.onLowMemory();
}
}
再修改manifests中AndroidManifest.xml
再application中加name
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
android:name=".Utils.AppContext">