在Adroid系统6.0之前,权限的处理是在App安装时受权,受权完了才能完成相关的安装。而在6.0的系统上,是先安装App,在安装完以后,在使用相关权限的操做时,才会弹出权限的提示框,用户赞成受权以后才能正常使用。谷歌这样作,可让用户更加清醒的认识相关权限的使用,在必定程度上更加人性化和保护了用户的隐私。android
谷歌官方将权限分为了两类,一个是正常权限(Normal Permissions),这类权限不涉及用户隐私,是不须要用户进行受权的,好比访问网络,手机震动等。还有一类是危险权限(Dangerous Permissions),通常是涉及到用户隐私的,须要用户进行受权,好比操做SD卡的写入,相机,录音等。网络
ACCESS_LOCATION_EXTRA_COMMANDSide
ACCESS_NETWORK_STATEui
ACCESS_NOTIFICATION_POLICYspa
ACCESS_WIFI_STATEcode
BLUETOOTHorm
BLUETOOTH_ADMIN文档
BROADCAST_STICKYit
CHANGE_NETWORK_STATEio
CHANGE_WIFI_MULTICAST_STATE
CHANGE_WIFI_STATE
DISABLE_KEYGUARD
EXPAND_STATUS_BAR
GET_PACKAGE_SIZE
INSTALL_SHORTCUT
INTERNET
KILL_BACKGROUND_PROCESSES
MODIFY_AUDIO_SETTINGS
NFC
READ_SYNC_SETTINGS
READ_SYNC_STATS
RECEIVE_BOOT_COMPLETED
REORDER_TASKS
REQUEST_INSTALL_PACKAGES
SET_ALARM
SET_TIME_ZONE
SET_WALLPAPER
SET_WALLPAPER_HINTS
TRANSMIT_IR
UNINSTALL_SHORTCUT
USE_FINGERPRINT
VIBRATE
WAKE_LOCK
WRITE_SYNC_SETTINGS
group:android.permission-group.CONTACTS permission:android.permission.WRITE_CONTACTS permission:android.permission.GET_ACCOUNTS permission:android.permission.READ_CONTACTS group:android.permission-group.PHONE permission:android.permission.READ_CALL_LOG permission:android.permission.READ_PHONE_STATE permission:android.permission.CALL_PHONE permission:android.permission.WRITE_CALL_LOG permission:android.permission.USE_SIP permission:android.permission.PROCESS_OUTGOING_CALLS permission:com.android.voicemail.permission.ADD_VOICEMAIL group:android.permission-group.CALENDAR permission:android.permission.READ_CALENDAR permission:android.permission.WRITE_CALENDAR group:android.permission-group.CAMERA permission:android.permission.CAMERA group:android.permission-group.SENSORS permission:android.permission.BODY_SENSORS group:android.permission-group.LOCATION permission:android.permission.ACCESS_FINE_LOCATION permission:android.permission.ACCESS_COARSE_LOCATION group:android.permission-group.STORAGE permission:android.permission.READ_EXTERNAL_STORAGE permission:android.permission.WRITE_EXTERNAL_STORAGE group:android.permission-group.MICROPHONE permission:android.permission.RECORD_AUDIO group:android.permission-group.SMS permission:android.permission.READ_SMS permission:android.permission.RECEIVE_WAP_PUSH permission:android.permission.RECEIVE_MMS permission:android.permission.RECEIVE_SMS permission:android.permission.SEND_SMS permission:android.permission.READ_CELL_BROADCASTS
看完官方文档,还好解决方案还不是太难,也不是很是麻烦,固然和之前相比仍是有一点繁琐的。废话很少说了,解决方案以下。
private boolean canMakeSmores(){ return(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP_MR1); }
检查系统版本的缘由,显而易见,若是是系统6.0及以上的,须要采用新的权限受权方法。
举个例子,若是你须要拍照操做,那么你就应该在拍照操做的地方,先加上权限申请受权。方式以下:
String[] perms = {"android.permission.CAMERA"}; int permsRequestCode = 200; requestPermissions(perms, permsRequestCode);
@Override public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){ switch(permsRequestCode){ case 200: boolean cameraAccepted = grantResults[0]==PackageManager.PERMISSION_GRANTED; if(cameraAccepted){ //受权成功以后,调用系统相机进行拍照操做等 }else{ //用户受权拒绝以后,友情提示一下就能够了 } break; } }
经过上面能够看出,只检查系统版本了,若是受权过的权限,还须要再次去受权么?咱们的判断其实能够更完善一下,好比:
private boolean hasPermission(String permission){ if(canMakeSmores()){ return(checkSelfPermission(permission)==PackageManager.PERMISSION_GRANTED); } return true; }