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[英]The following classes could not be instantiated:com.google.android.gms.ads.AdView (Open Class, Show Error Log)
[英]Android The following classes could not be instantiated: - com.google.android.gms.ads.AdView (Open Class, Show Exception)
我试图将广告放在我的应用程序上,但是当我将广告放在xml上时,出现此错误:
The following classes could not be instantiated:
- com.google.android.gms.ads.AdView (Open Class, Show Exception)
Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE
我正在使用AndroidStudio,而Im根据sdk上的示例-/ extras / google-play-services / samples / ads进行了所有操作。
谁能帮我吗?
xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.myfirstapp.MainActivity$PlaceholderFragment"
android:background="@drawable/fartpic"
>
<com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="@string/ad_unit_id"/>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="@string/copy_right" />
表现:
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="@drawable/fart_icon"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".FartActivity"
android:label="@string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
</activity>
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"/>
</application>
build.gradle:
apply plugin: 'com.android.application'
apply plugin: 'android'
android {
compileSdkVersion 19
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "com.pachu.fartsounds"
minSdkVersion 9
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:19.+'
compile 'com.google.android.gms:play-services:5.0.89'
}
尝试在Intellij Community Edition IDE中预览自定义视图AdView时遇到相同的问题。 最新版本的AdView类中似乎存在错误或至少“预览不友好”代码导致了此问题,因此我将gradle文件(基于Intellij项目的)中的依赖项降级为使用版本4。 x像这样:
compile 'com.google.android.gms:play-services:5.+'
至
compile 'com.google.android.gms:play-services:4.+'
具体来说,我将gradle文件的dependencies部分更改为如下所示:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.google.android.gms:play-services:4.+'
}
我认为这不是适当的解决方案(如果尚未提交错误报告,我将尝试提交错误报告),因为Google现在要求从8 /开始使用“最新的” Google Play服务SDK。 31/2014。
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