我想将加载屏幕设为SplashScreen，而应用程序使用SharedPrferences的AsyncTask加载数据。我需要它来改变应用程序的主题（和后来的语言）。这是诅咒代码：
LogoActivity：
package com.ivan.vts.mapper.extended;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import com.ivan.vts.mapper.R;
import com.ivan.vts.mapper.map.MapsActivity;
import com.ivan.vts.mapper.settings.helper.MenuSwitcher;
public class LogoActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
new SplashScreen().execute();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_logo);
}
private class SplashScreen extends AsyncTask<Void, Void, Integer> {
@Override
protected Integer doInBackground(Void... params) {
SharedPreferences preferences;
preferences = getSharedPreferences(Constants.APP_NAME, MODE_PRIVATE);
int themeNo = preferences.getInt("primaryTheme", 0);
return themeNo;
}
@Override
protected void onPostExecute(Integer theme) {
Bundle bundle = new Bundle();
bundle.putInt("theme", theme);
MenuSwitcher.getInstance().switchActivity(LogoActivity.this, MapsActivity.class, bundle);
}
}
}
的Manifest.xml：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.ivan.vts.mapper">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<application
android:name="android.support.multidex.MultiDexApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
tools:replace="android:icon">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/google_maps_key" />
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name=".map.MapsActivity"
android:configChanges="orientation|screenSize"
android:label="@string/app_name"
android:launchMode="singleTask">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".navigation.NavigationActivity"
android:configChanges="orientation|screenSize"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.SEND" />
</intent-filter>
</activity>
<activity
android:name=".settings.SettingActivity"
android:configChanges="orientation|screenSize"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW" />
</intent-filter>
</activity>
<activity
android:name=".history.HistoryActivity"
android:configChanges="orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW" />
</intent-filter>
</activity>
<activity android:name=".extended.LogoActivity"
android:configChanges="orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
gradle.built：
apply plugin: 'com.android.application'
android { compileSdkVersion 24 buildToolsVersion“25.0.2”
defaultConfig {
applicationId "com.ivan.vts.mapper"
minSdkVersion 16
targetSdkVersion 24
versionCode 1
versionName "1.0"
multiDexEnabled true
jackOptions {
enabled true
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
compileOptions {
targetCompatibility JavaVersion.VERSION_1_8
sourceCompatibility JavaVersion.VERSION_1_8
}
dexOptions {
javaMaxHeapSize "2048M"
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile group: 'com.google.code.gson', name: 'gson', version: '2.4'
compile group: 'commons-io', name: 'commons-io', version: '2.5'
compile 'com.android.volley:volley:1.0.0'
compile 'com.android.support:appcompat-v7:24.0.0'
compile 'com.google.android.gms:play-services-location:10.2.4'
compile 'com.google.android.gms:play-services-maps:10.2.4'
compile 'com.google.android.gms:play-services-places:10.2.4'
compile 'com.android.support:multidex:1.0.1'
compile 'cn.pedant.sweetalert:library:1.3'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.google.maps.android:android-maps-utils:0.4.+'
testCompile 'junit:junit:4.12'
}
activity_logo.xml：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.ivan.vts.mapper.extended.LogoActivity">
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
app:srcCompat="@drawable/file_tree"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp" />
</android.support.constraint.ConstraintLayout>
问题是这给了我一个错误：
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ivan.vts.mapper/com.ivan.vts.mapper.extended.LogoActivity}: android.content.res.Resources$NotFoundException: File res/drawable/abc_ic_ab_back_material.xml from drawable resource ID #0x7f020013
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2071)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2096)
at android.app.ActivityThread.access$600(ActivityThread.java:138)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1207)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:4787)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.res.Resources$NotFoundException: File res/drawable/abc_ic_ab_back_material.xml from drawable resource ID #0x7f020013
at android.content.res.Resources.loadDrawable(Resources.java:1923)
at android.content.res.Resources.getDrawable(Resources.java:664)
at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:354)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:193)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181)
at android.support.v7.widget.AppCompatDrawableManager.checkVectorDrawableSetup(AppCompatDrawableManager.java:689)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:186)
at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:77)
at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:83)
at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146)
at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511)
at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)
at com.ivan.vts.mapper.extended.LogoActivity.onCreate(LogoActivity.java:17)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2035)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2096)
at android.app.ActivityThread.access$600(ActivityThread.java:138)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1207)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:4787)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #17: invalid drawable tag vector
at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:886)
at android.graphics.drawable.Drawable.createFromXml(Drawable.java:822)
at android.content.res.Resources.loadDrawable(Resources.java:1920)
at android.content.res.Resources.getDrawable(Resources.java:664)
at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:354)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:193)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181)
at android.support.v7.widget.AppCompatDrawableManager.checkVectorDrawableSetup(AppCompatDrawableManager.java:689)
at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:186)
at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:77)
at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:83)
at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146)
at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511)
at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)
at com.ivan.vts.mapper.extended.LogoActivity.onCreate(LogoActivity.java:17)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2035)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2096)
at android.app.ActivityThread.access$600(ActivityThread.java:138)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1207)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:4787)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method) e
我的问题是如何做到这一点？我错过了什么？如果有人需要更多细节，我会编辑。提前谢谢！