android 进行拍照操作时对 onActivityResult()的封装隔离

来源：互联网发布：淘宝的笛子编辑：程序博客网时间：2024/04/29 17:57

在进行调用相机拍照功能时，需要使用到

startActivityForResult 和 onActivityResult

在实际使用时还是略微有些繁琐，比较理想的状态应当是屏蔽拍照、截屏等处理细节，调用拍照功能的Activity页面只需要调用拍照方法并获得照片路径即可

即：如

getPhoto（params ， callback（）{onImageInfo（String imagePath）{}}）

处理思路：

建立一个底层的BasicActivity ，调用拍照功能的Sample_Photolib继承自 BasicActivity，从而 onActivityResult操作可以在底层的 BasicActivity中完成

下面进行具体的操作：

1、建立BasicActivity

public class BasicActivity extends AppCompatActivity {    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if(resultCode == RESULT_OK){            if(listener!=null){                listener.onResult(data);            }        }        listener =null;    }    public void startActivityForListener(Intent intent, OnActivityResultListener onActivityResultListener){        this.listener = onActivityResultListener;        startActivityForResult(intent,1011);    }    private OnActivityResultListener listener;    public interface  OnActivityResultListener{        void onResult(Intent result);    }}

2、创建Sample_Photolib

public class Sample_Photolib extends BaseActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_photolib);        ButterKnife.bind(this);    }    @OnClick(R.id.btn_cropcamera)    void cropCameraPhoto(){//拍照按钮的触发方法        XtionPhotoService.cropCameraPhoto(this, true, new PhotoService.OnPhotoListener() {            @Override            public void onSelectedAlbum(String[] ids, String[] uris) {            }            @Override            public void onCamera(String pic_name, String uri) {                Toast.makeText(Sample_Photolib.this,pic_name,Toast.LENGTH_SHORT).show();            }        });    }}

3、创建PhotoService，拍照工具类

public class XtionPhotoService {    public static OnPhotoListener listener;    /**     * 拍照，返回临时照片地址     *     * @param activity  :XtionBaseActivity     * @param isCrop    ：是否截图     * @param onPhotoListener   ：图片信息返回接口     */    @TargetApi(Build.VERSION_CODES.M)    public static void cropCameraPhoto(BasicActivity activity, boolean isCrop, OnPhotoListener onPhotoListener) {        listener = onPhotoListener;        //先进入缓冲Activity        Intent intent =new Intent(activity,CameraActvity.class);        intent.putExtra("isCrop",isCrop);        activity.startActivityForListener(intent, new BasicActivity.OnActivityResultListener() {            @Override            public void onResult(Intent result) {//具体的信息处理在这里完成                String pic_name =  result.getStringExtra(PathConstant.ActivityResult_PicName);//文件名                String pic_ComplePath= PhotoUtils.getPhotoPath(pic_name);//全路径                listener.onCamera(pic_name,pic_ComplePath);//返回数据            }        });    }    public static void cropCameraPhoto(XtionBasicActivity activity, OnPhotoListener onPhotoListener) {        cropCameraPhoto(activity,false,onPhotoListener);    }    public interface OnPhotoListener{        //public void onCropCamera(Bitmap bitmap,FileDALEx fileDALEx);        //public void onCropAlbum(Bitmap bitmap,FileDALEx fileDALEx);        public void onSelectedAlbum(String[] ids ,String[] uris);        public void onCamera(String pic_name,String uri);    }}

具体的获取图片操作被封装在了CameraActvity进行

以上即实现了进行拍照获取图片操作时对onActivtiyResult的隔离。

下面是CameraActvity的实现

public class CameraActvity extends Activity {    //临时照片文件名    public  static String pic_name = "";    public final static int ActivityResult_CAMERA_WITH_DATA = 11111;    public final static int ActivityResult_CAMERA_CROP_WITH_DATA = 12121;    public final static int ActivityResult_CROP_SMALL_PICTURE = 22222;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_photobuffer);        Intent intent = getIntent();        boolean isCrop = intent.getBooleanExtra("isCrop",false);        pic_name=cropCameraPhoto(isCrop);    }    @Override    protected void onSaveInstanceState(Bundle outState) {        super.onSaveInstanceState(outState);        System.out.println("onSaveInstanceState");        outState.putString("pic_name",pic_name);    }    @Override    protected void onRestoreInstanceState(Bundle savedInstanceState) {        super.onRestoreInstanceState(savedInstanceState);        System.out.println("onRestoreInstanceState");        pic_name=savedInstanceState.getString("pic_name");    }    /**     * 拍照，返回临时照片地址     *     * @return String ：照片名称     */    @TargetApi(Build.VERSION_CODES.M)    private  String cropCameraPhoto( boolean isCrop) {        int MaxLimit = 10;        int retianMB = FileUtil.freeSpaceOnSd();        if (retianMB < MaxLimit) {            //onToastErrorMsg("存储空间不足" + MaxLimit + "M，未能获取图片");            Toast.makeText(this, "存储空间不足" + MaxLimit + "M，未能获取图片", Toast.LENGTH_SHORT).show();            return "";        }        String tempImage = null;        try {            tempImage = UUID.randomUUID().toString();            File root = new File(PathConstant.IMAGEPATH);            if (!root.exists()) {                root.mkdir();            }            File directory = new File(PhotoUtils.getBasePath());            if (!directory.exists()) {                directory.mkdir();            }            File picFile = new File(PhotoUtils.getPhotoPath(tempImage));            if (!picFile.exists()) {                picFile.createNewFile();            }            Uri photoUri=Uri.fromFile(picFile);            Intent cameraIntent =new Intent(MediaStore.ACTION_IMAGE_CAPTURE);            cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,photoUri);            if (Build.VERSION.SDK_INT>13){//4.0以上                cameraIntent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,0);//低质量            }            cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,photoUri);            if (isCrop){                startActivityForResult(cameraIntent, CameraActvity.ActivityResult_CAMERA_CROP_WITH_DATA);//拍照返回后跳至裁剪            }else {                startActivityForResult(cameraIntent, CameraActvity.ActivityResult_CAMERA_WITH_DATA);//拍照返回            }        } catch (IOException e) {            e.printStackTrace();        }        return tempImage;    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        switch (requestCode){            case CameraActvity.ActivityResult_CAMERA_CROP_WITH_DATA://拍照返回后跳至裁剪                if (resultCode==RESULT_OK){                    Bitmap bitmap = PhotoUtils.decodeUriAsBitmap(PhotoUtils.getPhotoPath(pic_name),200);                    int degree =PhotoUtils.readPictureDegree(PhotoUtils.getPhotoPath(pic_name));                    //根据旋转角度，生成旋转矩阵                    Matrix matrix=new Matrix();                    matrix.setRotate(degree);                    //旋转                    int width=bitmap.getWidth();                    int height=bitmap.getHeight();                    bitmap=Bitmap.createBitmap(bitmap,0,0,width,height,matrix,true);                    PhotoUtils.saveBitmap2file(bitmap,PhotoUtils.getPhotoPath(pic_name));                    Uri uri=Uri.fromFile(new File(PhotoUtils.getPhotoPath(pic_name)));                    cropImageUri(uri,250,250, CameraActvity.ActivityResult_CROP_SMALL_PICTURE);                }                break;            /**             * 裁剪返回             */            case CameraActvity.ActivityResult_CROP_SMALL_PICTURE:                if (resultCode==RESULT_OK){                    Bitmap bitmap= (Bitmap) data.getExtras().get("data");                    if (PhotoUtils.saveBitmap2file(bitmap,PhotoUtils.getPhotoPath(pic_name))){//bitmap存储成file                        setResultBack();//数据返回并关闭页面                    }                }                break;            default :                break;        }    }//    protected FileDALEx fileDALEx;    private void cropImageUri(Uri uri, int outputX, int outputY, int requestCode) {        Intent intent=new Intent("com.android.camera.action.CROP");//调用系统裁剪功能        intent.setDataAndType(uri,"image/*");        intent.putExtra("crop","true");        intent.putExtra("aspectX",1);        intent.putExtra("aspectY",1);        intent.putExtra("outputX",outputX);        intent.putExtra("outputY",outputY);        intent.putExtra("scale",true);        intent.putExtra(MediaStore.EXTRA_OUTPUT,PhotoUtils.getPhotoPath(pic_name));        intent.putExtra("return-data",true);        intent.putExtra("outputFormat",Bitmap.CompressFormat.JPEG.toString());        intent.putExtra("noFaceDetection",true);        intent.putExtra("scaleUpIfNeeded", "true");        startActivityForResult(intent,requestCode);    }    private  void setResultBack(){        Intent intent = new Intent();        intent.putExtra(PathConstant.ActivityResult_PicName,pic_name);        setResult(RESULT_OK,intent);        finish();    }}

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