我实现了初始屏幕并对其进行了更改，以使其仅在应用程序加载时运行。现在，该应用程序将根本无法运行。所有更改were based on this short tutorial
我迷路了，要求指导故障排除。以下是我修改过的文件
清单
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="app"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".SplashActivity"
android:label="@string/app_name"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:configChanges="orientation|keyboardHidden"
android:label="AppName"
android:screenOrientation="portrait"
android:theme="@style/AppTheme.NoActionBar"></activity>
</application>
</manifest>
SplashActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
public class SplashActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
finish();
}
}
Background_splash.xml
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:drawable="@color/gray"/>
<item>
<bitmap
android:gravity="center"
android:src="@mipmap/ic_launcher"/>
</item>
</layer-list>
Styles.XML
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorAccent</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<style name="SplashTheme" parent="Theme.AppCompat.NoActionBar">
<item name="android:windowBackground">@drawable/background_splash</item>
</style>
</resources>
日志
2019-06-16 15:35:12.476 32169-32169/com.jstudios.AppName E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.jstudios.AppName, PID: 32169
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jstudios.AppName/com.jstudios.AppName.SplashActivity}: android.content.res.Resources$NotFoundException: Drawable com.jstudios.AppName:drawable/background_splash with resource ID #0x7f07005d
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3108)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3251)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7045)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
Caused by: android.content.res.Resources$NotFoundException: Drawable com.jstudios.AppName:drawable/background_splash with resource ID #0x7f07005d
Caused by: android.content.res.Resources$NotFoundException: File res/drawable/background_splash.xml from drawable resource ID #0x7f07005d
at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:898)
at android.content.res.ResourcesImpl.loadDrawable(ResourcesImpl.java:677)
at android.content.res.Resources.getDrawableForDensity(Resources.java:903)
at android.content.res.Resources.getDrawable(Resources.java:842)
at android.content.Context.getDrawable(Context.java:628)
at androidx.core.content.ContextCompat.getDrawable(ContextCompat.java:463)
at androidx.appcompat.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:203)
at androidx.appcompat.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:86)
at androidx.appcompat.app.AppCompatDelegateImpl.<init>(AppCompatDelegateImpl.java:260)
at androidx.appcompat.app.AppCompatDelegate.create(AppCompatDelegate.java:182)
at androidx.appcompat.app.AppCompatActivity.getDelegate(AppCompatActivity.java:520)
at androidx.appcompat.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)
at com.jstudios.AppName.SplashActivity.onCreate(SplashActivity.java:12)
at android.app.Activity.performCreate(Activity.java:7327)
at android.app.Activity.performCreate(Activity.java:7318)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3088)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3251)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7045)
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:964)
Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #8: <bitmap> requires a valid 'src' attribute
at android.graphics.drawable.BitmapDrawable.updateStateFromTypedArray(BitmapDrawable.java:849)
at android.graphics.drawable.BitmapDrawable.inflate(BitmapDrawable.java:770)
at android.graphics.drawable.DrawableInflater.inflateFromXmlForDensity(DrawableInflater.java:146)
2019-06-16 15:35:12.477 32169-32169/com.jstudios.AppName E/AndroidRuntime: at android.graphics.drawable.Drawable.createFromXmlInnerForDensity(Drawable.java:1359)
at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:1348)
at android.graphics.drawable.LayerDrawable.inflateLayers(LayerDrawable.java:279)
at android.graphics.drawable.LayerDrawable.inflate(LayerDrawable.java:194)
at android.graphics.drawable.DrawableInflater.inflateFromXmlForDensity(DrawableInflater.java:146)
at android.graphics.drawable.Drawable.createFromXmlInnerForDensity(Drawable.java:1359)
at android.graphics.drawable.Drawable.createFromXmlForDensity(Drawable.java:1318)
at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:879)
... 27 more