android 权限申请

/**
* request Camera Permission
* Created by long.yan on 2017/9/15.
*
* @author long.yan
*/

public class PermissionUtils {
public static boolean hasCameraPermission(Activity activity) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
MELog.e("版本-->" + Build.VERSION.SDK_INT, "Android6.0以上");
return ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
} else {
MELog.e("版本-->" + Build.VERSION.SDK_INT, "Android6.0以下");
PackageManager packageManager = activity.getPackageManager();
int permission = packageManager.checkPermission("android.permission.CAMERA", activity.getPackageName());
MELog.i("hasCameraPermission->", "" + permission);
if (PackageManager.PERMISSION_GRANTED == permission) {
return true;
} else {
return false;
}
}
}

public static void reqCameraPermission(Activity activity) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
MELog.e("版本-->" + Build.VERSION.SDK_INT, "Android6.0以上");
activity.requestPermissions(new String[]{Manifest.permission.CAMERA}, 0);
} else {
MELog.e("版本-->" + Build.VERSION.SDK_INT, "Android6.0以下");
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CAMERA}, 0);
}
}

/**
* 返回true 表示可以使用 返回false表示不可以使用
*/
public static boolean cameraIsCanUse() {
boolean isCanUse = true;
Camera mCamera = null;
try {
mCamera = Camera.open();
Camera.Parameters mParameters = mCamera.getParameters();
mCamera.setParameters(mParameters);
} catch (Exception e) {
isCanUse = false;
}

if (mCamera != null) {
try {
mCamera.release();
} catch (Exception e) {
e.printStackTrace();
return isCanUse;
}
}
return isCanUse;
}
}