android自带的功能

1、图片剪裁
Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri,"image/*");
        intent.putExtra("crop", "true");
        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        // outputX outputY 是裁剪图片宽高
        intent.putExtra("outputX",100);
        intent.putExtra("outputY",100);
        intent.putExtra("return-data", true);
        intent.putExtra("noFaceDetection", true);
        startActivityForResult(intent, PHOTO_RESOULT);