Android动态权限

Android6.0推出了动态权限管理。动态权限管理的添加方便了用户隐私的保护，同时也让开发者添加了多一些代码。

动态权限的使用前提

动态权限管理的使用首先用户的手机系统必须是Android6.0及以上。以及应用程序build.gradle的compileSdkVersion和targetSdkVersion都要设置为23

compileSdkVersion 23
buildToolsVersion "24.0.1"

defaultConfig {
    applicationId "com.honso.visitcustomer"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}

动态权限实用类

public class MPermissionUtils {
    private static final MPermissionUtils instance = new MPermissionUtils();

    public static MPermissionUtils getInstance() {
        return MPermissionUtils.instance;
    }


    /**
     * 申请多个权限
     *
     * @param context     Activity对象
     * @param permissions 权限列表
     * @param requestCode 请求码
     */
    @TargetApi(Build.VERSION_CODES.M)
    public void addPermissionsCheck(Activity context, String[] permissions, int requestCode, onPermissionAgreeListener listener) {
        //检测是否拥有权限
        if (ContextCompat.checkSelfPermission(context, permissions[0]) != PackageManager.PERMISSION_GRANTED) {
            //申请权限
            ActivityCompat.requestPermissions(context, permissions, requestCode);
        } else {
            listener.onAgree(requestCode, permissions);
        }
    }

    /**
     * 申请多个权限
     *
     * @param context     Activity对象
     * @param permissions 权限列表
     * @param requestCode 请求码
     */
    @TargetApi(Build.VERSION_CODES.M)
    public void addPermissionsCheck(Fragment context, String[] permissions, int requestCode, onPermissionAgreeListener listener) {
        for (int i = 0; i < permissions.length; i++) {
            //检测是否拥有权限
            if (context.getActivity().checkSelfPermission(permissions[i]) != PackageManager.PERMISSION_GRANTED) {
                //申请权限
                context.requestPermissions(permissions, requestCode);
            } else {
                listener.onAgree(requestCode, permissions);
            }
        }
    }

    public interface onPermissionAgreeListener {
        void onAgree(int requestCode, String[] permissions);
    }

动态权限应用

//申请动态权限，这些属于危险权限就需要通过动态权限申请。并且在Manifest.xml也要声明。
private void checkPermission() {
    MPermissionUtils.getInstance().addPermissionsCheck(
            this, new String[]{
                    Manifest.permission.ACCESS_FINE_LOCATION,
                    Manifest.permission.ACCESS_COARSE_LOCATION,
                    Manifest.permission.READ_PHONE_STATE,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.CAMERA,
                    Manifest.permission.CALL_PHONE
            },
            PERMISSION_LOCATION_CODE,
            new MPermissionUtils.onPermissionAgreeListener() {
                @Override
                public void onAgree(int requestCode, String[] permissions) {
                    bindService(new Intent(MainActivity.this, LocationService.class), MainActivity.this, Context.BIND_AUTO_CREATE);
                }
            });
}

//重写这个方法
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case PERMISSION_LOCATION_CODE:
            if (grantResults.length > 0) {
                for (int i = 0; i < grantResults.length; i++) {
                    if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
                        bindService(new Intent(MainActivity.this, LocationService.class), this, Context.BIND_AUTO_CREATE);
                    } else {
                        checkPermission();
                    }
                }
            } else {
                checkPermission();
            }
            break;
    }
}