无法将MediaRouteButton编译为项目

Question

我正在使用CastButton执行Movie项目，我完成了一个示例，此工作非常完美。但是当我在做真正的项目时，我遇到了一个问题。 我导入编译到我的grande文件中，但是当我创建MediaRouteButton时我有错误，我尝试了很多方法，但无法修复，所以现在我真的需要帮助： 这是：编译文件：

compile 'com.android.support:appcompat-v7:25.0.0' 
    compile 'com.android.support:mediarouter-v7:25.0.0' 
    compile 'com.googlecode.android-query:android-query:0.25.9' 
    compile 'com.google.android.gms:play-services-cast-framework:10.2.0' 

这是logcat的：

Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/app/MediaRouteButton; 
                at com.jlabs.pluginplayer.view.MediaPlayerView.addMediaButton(MediaPlayerView.java:533) 
                at com.jlabs.pluginplayer.view.MediaPlayerView.access$4200(MediaPlayerView.java:53) 
                at com.jlabs.pluginplayer.view.MediaPlayerView$3.run(MediaPlayerView.java:514) 
                at android.app.Activity.runOnUiThread(Activity.java:5524) 
                at com.jlabs.pluginplayer.view.MediaPlayerView.preload(MediaPlayerView.java:490) 
                at com.jlabs.pluginplayer.PlayerActivity.onResume(PlayerActivity.java:330) 
                at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1258) 
                at android.app.Activity.performResume(Activity.java:6327) 
                at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092) 
                at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134) 
                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481) 
                at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                at android.os.Handler.dispatchMessage(Handler.java:102) 
                at android.os.Looper.loop(Looper.java:148) 
                at android.app.ActivityThread.main(ActivityThread.java:5417) 
                at java.lang.reflect.Method.invoke(Native Method) 
                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
               Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.app.MediaRouteButton" on path: DexPathList[[zip file "/data/app/jp.tsutayamovie-1/base.apk"],nativeLibraryDirectories=[/data/app/jp.tsutayamovie-1/lib/arm, /data/app/jp.tsutayamovie-1/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]] 
                at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) 
                at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 
                at java.lang.ClassLoader.loadClass(ClassLoader.java:469) 
                at com.jlabs.pluginplayer.view.MediaPlayerView.addMediaButton(MediaPlayerView.java:533)  
                at com.jlabs.pluginplayer.view.MediaPlayerView.access$4200(MediaPlayerView.java:53)  
                at com.jlabs.pluginplayer.view.MediaPlayerView$3.run(MediaPlayerView.java:514)  
                at android.app.Activity.runOnUiThread(Activity.java:5524)  
                at com.jlabs.pluginplayer.view.MediaPlayerView.preload(MediaPlayerView.java:490)  
                at com.jlabs.pluginplayer.PlayerActivity.onResume(PlayerActivity.java:330)  
                at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1258)  
                at android.app.Activity.performResume(Activity.java:6327)  
                at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092)  
                at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134)  
                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)  
                at android.app.ActivityThread.-wrap11(ActivityThread.java)  
                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
                at android.os.Handler.dispatchMessage(Handler.java:102)  
                at android.os.Looper.loop(Looper.java:148)  
                at android.app.ActivityThread.main(ActivityThread.java:5417)  
                at java.lang.reflect.Method.invoke(Native Method)  
                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  
               Suppressed: java.lang.ClassNotFoundException: android.support.v7.app.MediaRouteButton 
                at java.lang.Class.classForName(Native Method) 
                at java.lang.BootClassLoader.findClass(ClassLoader.java:781) 
                at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) 
                at java.lang.ClassLoader.loadClass(ClassLoader.java:504) 
                 ... 20 more 
               Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available 

我怎样才能解决呢？

Answer 1

从这个thread基础，你所得到的，原因如下的错误：

在你gradle这个构建文件，也许你的应用定位，并与Android的测试版仍处于发展编译搭配：

compileSdkVersion 'android-L' 
buildToolsVersion '20' 

以及

minSdkVersion 20 
targetSdkVersion 20 

首先要注意的是此应用程序无法在没有android-L的任何设备上正确运行（此时）。

附加参考：java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v4/os/BuildCompat

检查你的classpath中包含的jar（程序兼容性），如果你的classpath中不包含JAR然后只需添加类在类路径中。

希望这会有所帮助！