Android动态申请权限

Manifest.permission

Android6.0后，当权限等级为dangerous及以上时，就需要动态权限申请，否则会程序崩溃

打开摄像头示例：

if(ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA)!= PackageManager.PERMISSION_GRANTED){
   //在Activity中
   //ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA);
   requestPermissions(new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA);
   //在Fragment中
}else{
    Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivity(intent);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == PhotoFragment.REQUEST_CAMERA) {
        if (grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivity(intent);
        } else {
            Toast.makeText(getActivity(), "未获取打开摄像头权限", Toast.LENGTH_LONG).show();
        }
    }
}