试着写一个音乐播放器 跟着网上代码的模板，一进入播放页面就闪退

[qq_35709020]

logcat:
FATAL EXCEPTION: main
Process: com.example.administrator.zhinengzhentou, PID: 8126
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.administrator.zhinengzhentou/com.example.administrator.zhinengzhentou.Music}: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/audio/media from pid=8126, uid=10061 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
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.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/audio/media from pid=8126, uid=10061 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.os.Parcel.readException(Parcel.java:1599)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
at android.content.ContentResolver.query(ContentResolver.java:491)
at android.content.ContentResolver.query(ContentResolver.java:434)
at com.example.administrator.zhinengzhentou.MusicUtils.getMusicData(MusicUtils.java:24)
at com.example.administrator.zhinengzhentou.Music.initView(Music.java:116)
at com.example.administrator.zhinengzhentou.Music.onCreate(Music.java:109)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
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) 

[__椎名真白]

没有动态申请权限吧，错误提示里说，要有读取外部内存的权限。

[开发者_android]

6.0以上，要代码中动态申请权限~~

[jklwan]

安卓6.0以上，进行了权限管理 不止要在AndroidManifest.xml里面添加权限 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 还要在JAVA代码中运行时实时请求权限 参考链接

[qq_41128653]

版本问题，需要权限的！