Android 6.0运行时权限的申请使用及EasyPermissions的使用

在6.0下新的权限机制分为两类，Normal Permissions，这类权限是不需要用户授权，不会触及用户的隐私，只需要在manefest里面申请即可；还有一类是Dangerous Permissions，这类权限需要动态的去申请。

Normal Permission如下：

  android.permission.ACCESS_LOCATION_EXTRA_COMMANDS  android.permission.ACCESS_NETWORK_STATE  android.permission.ACCESS_NOTIFICATION_POLICY  android.permission.ACCESS_WIFI_STATE  android.permission.ACCESS_WIMAX_STATE  android.permission.BLUETOOTH  android.permission.BLUETOOTH_ADMIN  android.permission.BROADCAST_STICKY  android.permission.CHANGE_NETWORK_STATE  android.permission.CHANGE_WIFI_MULTICAST_STATE  android.permission.CHANGE_WIFI_STATE  android.permission.CHANGE_WIMAX_STATE  android.permission.DISABLE_KEYGUARD  android.permission.EXPAND_STATUS_BAR  android.permission.FLASHLIGHT  android.permission.GET_ACCOUNTS  android.permission.GET_PACKAGE_SIZE  android.permission.INTERNET  android.permission.KILL_BACKGROUND_PROCESSES  android.permission.MODIFY_AUDIO_SETTINGS  android.permission.NFC  android.permission.READ_SYNC_SETTINGS  android.permission.READ_SYNC_STATS  android.permission.RECEIVE_BOOT_COMPLETED  android.permission.REORDER_TASKS  android.permission.REQUEST_INSTALL_PACKAGES  android.permission.SET_TIME_ZONE  android.permission.SET_WALLPAPER  android.permission.SET_WALLPAPER_HINTS  android.permission.SUBSCRIBED_FEEDS_READ  android.permission.TRANSMIT_IR  android.permission.USE_FINGERPRINT  android.permission.VIBRATE  android.permission.WAKE_LOCK  android.permission.WRITE_SYNC_SETTINGS  com.android.alarm.permission.SET_ALARM  com.android.launcher.permission.INSTALL_SHORTCUT  com.android.launcher.permission.UNINSTALL_SHORTCUT

Dangerous Permissions：

  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

可以看到Dangerous Permissions是按照组来分类的，如果申请了一组的其中一个权限，那么默认会获得该组的所有权限的使用。

申请的流程

1.在AndroidManifest里面配置需要的权限，无论是普通的还是特殊的权限都需要在这里配置。

2.检查权限，如果没有权限则申请

3.给用户申请权限的解释，这个方法只会在第一次用户拒绝授权，再次去申请这个的权限时会用到

4.申请相应的权限

5.处理申请权限的回调，在这里获得哪些授权成功哪些失败，处理需要的逻辑

具体的例子

下面的例子是获取用户的写外部存储器和打电话的权限

public class Main2Activity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE)                != PackageManager.PERMISSION_GRANTED) {//未获取权限            if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CALL_PHONE)) {                //当用户第一次申请拒绝时，再次申请该权限调用                Toast.makeText(this, "拨打电话权限", Toast.LENGTH_SHORT).show();            }            //申请权限            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, 0x01);        } else {//已经获得了权限            call();        }    }    private void call() {        Toast.makeText(this, "打电话", Toast.LENGTH_SHORT).show();    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        if (requestCode == 0x01) {            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {//授权成功                call();            } else {//授权失败                Toast.makeText(this, "获取权限失败", Toast.LENGTH_SHORT).show();            }        }    }}

封装的三方库------EasyPermissions

这个用于权限的申请，使用起来十分的简单

导入

compile 'pub.devrel:easypermissions:0.1.5'

使用很简单，代码中都有注释，都能看懂

public class MainActivity extends AppCompatActivity implements EasyPermissions.PermissionCallbacks {    private static final String TAG = "lzy";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //所要申请的权限        String[] perms = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CALL_PHONE};                if (EasyPermissions.hasPermissions(this, perms)) {//检查是否获取该权限            Log.i(TAG, "已获取权限");        } else {            //第二个参数是被拒绝后再次申请该权限的解释            //第三个参数是请求码            //第四个参数是要申请的权限            EasyPermissions.requestPermissions(this, "必要的权限", 0, perms);        }    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        //把申请权限的回调交由EasyPermissions处理        EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);    }    //下面两个方法是实现EasyPermissions的EasyPermissions.PermissionCallbacks接口    //分别返回授权成功和失败的权限    @Override    public void onPermissionsGranted(int requestCode, List<String> perms) {        Log.i(TAG, "获取成功的权限" + perms);    }    @Override    public void onPermissionsDenied(int requestCode, List<String> perms) {        Log.i(TAG, "获取失败的权限" + perms);    }}