android拍照、图库与裁剪

一、前言

好多APP都有上传图片的功能，无聊是调起相册还是拍照，都必须要在activity的onActivityResult回调方法处理，实现起来比较繁琐。至此对其进一步封装。使用起来更加简单。

二、直接上源码：

GitHub源码

1、首先创建一个PicOptions，作用是配置相关信息

public class PicOptions {    private boolean isCrop;//是否裁剪    private int cropWidth;//裁剪宽度    private int cropHeight;//裁剪高度    private String providerAuthority;//7.0以上访问sdcard需要用到    private File cacheFile;//缓存文件    private PicOptions(Builder builder) {        isCrop = builder.isCrop;        cropWidth = builder.cropWidth;        cropHeight = builder.cropHeight;        providerAuthority = builder.providerAuthority;        cacheFile = builder.cacheFile;    }    public boolean isCrop() {        return isCrop;    }    public int getCropWidth() {        return cropWidth;    }    public int getCropHeight() {        return cropHeight;    }    public String getProviderAuthority() {        return providerAuthority;    }    public File getCacheFile() {        return cacheFile;    }    public static Builder beginBuilder() {        return new Builder();    }    public static class Builder {        private boolean isCrop = false;        private int cropWidth = 0;        private int cropHeight = 0;        private String providerAuthority;        private File cacheFile;        public Builder setCrop(boolean crop) {            isCrop = crop;            return this;        }        public Builder setCropWidth(int cropWidth) {            this.cropWidth = cropWidth;            return this;        }        public Builder setCropHeight(int cropHeight) {            this.cropHeight = cropHeight;            return this;        }        public Builder setProviderAuthority(String providerAuthority) {            this.providerAuthority = providerAuthority;            return this;        }        public Builder setCacheFile(File cacheFile) {            this.cacheFile = cacheFile;            return this;        }        public PicOptions build() {            if (this.cacheFile == null) {                throw new IllegalArgumentException("cacheFile no found...");            }            return new PicOptions(this);        }    }}

2、回调接口PicListener

public interface PicListener {    void onTakePicSuccess(Uri uri);//成功    void onTakePicFail();//失败}

3、管理器PicManager

public class PicManager {    private final String TAG = "PicManager";    private final int REQUEST_CODE_CAMERA = 1009;//拍照    private final int REQUEST_CODE_PICTURE = 1008;//相册    private final int REQUEST_CODE_CUT_PIC = 1007;//裁剪    private final String REQUEST_TYPE = "requestType";    private PicOptions picOptions;    private PicListener listener;    public PicManager setPicOptions(PicOptions picOptions) {        this.picOptions = picOptions;        return this;    }    public PicManager setListener(PicListener listener) {        this.listener = listener;        return this;    }    public void takeCamera(Context context) {        startPicActivity(context, REQUEST_CODE_CAMERA);    }    public void takePhotoAlbum(Context context) {        startPicActivity(context, REQUEST_CODE_PICTURE);    }    private void startPicActivity(Context context, int type) {        Intent intent = new Intent(context, PicActivity.class);        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        intent.putExtra(REQUEST_TYPE, type);        context.startActivity(intent);    }    public void behavior(Activity activity, Intent intent, Bundle savedInstanceState) {        if (intent == null) {            YLogUtil.INSTANCE.eTag(TAG, "behavior intent is null");            onDestroy(activity);            return;        }        if (intent.getExtras() == null) {            YLogUtil.INSTANCE.eTag(TAG, "behavior extras is null");            onDestroy(activity);            return;        }        if (savedInstanceState == null) {            int requestType = intent.getExtras().getInt(REQUEST_TYPE);            if (requestType == REQUEST_CODE_CAMERA) {                executeCamera(activity);            } else if (requestType == REQUEST_CODE_PICTURE) {                executePhotoAlbum(activity);            }        }    }    private void executeCamera(Activity context) {        String providerAuthority = context.getPackageName() + ".FileProvider";        if (null != picOptions.getProviderAuthority() && !picOptions.getProviderAuthority().isEmpty()) {            providerAuthority = picOptions.getProviderAuthority();        }        Uri imageUri;        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        // 判断版本大于等于7.0        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {            try {                imageUri = FileProvider.getUriForFile(context, providerAuthority, picOptions.getCacheFile());            } catch (Exception e) {                e.printStackTrace();                imageUri = Uri.fromFile(picOptions.getCacheFile());            }            // 给目标应用一个临时授权            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);        } else {            imageUri = Uri.fromFile(picOptions.getCacheFile());        }        // 指定调用相机拍照后照片的储存路径        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);        context.startActivityForResult(intent, REQUEST_CODE_CAMERA);    }    private void executePhotoAlbum(Activity context) {        Intent intent = new Intent(Intent.ACTION_PICK, null);        intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,                "image/*");        context.startActivityForResult(intent, REQUEST_CODE_PICTURE);    }    private void crop(Activity context, Uri uri) {        YLogUtil.INSTANCE.iFormatTag(TAG, "crop uri：%s", uri);        Intent intent = new Intent("com.android.camera.action.CROP");        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);        }        intent.setDataAndType(uri, "image/*");        // crop为true是设置在开启的intent中设置显示的view可以剪裁        intent.putExtra("crop", "true");        // aspectX aspectY 是宽高的比例        intent.putExtra("aspectX", 1);        intent.putExtra("aspectY", 1);        // outputX,outputY 是剪裁图片的宽高        intent.putExtra("outputX", picOptions.getCropWidth());        intent.putExtra("outputY", picOptions.getCropHeight());        intent.putExtra("return-data", false);        // intent.putExtra(MediaStore.EXTRA_OUTPUT,        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(picOptions.getCacheFile()));        intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());        intent.putExtra("noFaceDetection", true); // no face detection        context.startActivityForResult(intent, REQUEST_CODE_CUT_PIC);    }    public void onActivityResult(Activity activity, int requestCode, int resultCode, Intent data) {        if (listener == null || (requestCode != REQUEST_CODE_CAMERA && requestCode != REQUEST_CODE_PICTURE && requestCode != REQUEST_CODE_CUT_PIC)) {            YLogUtil.INSTANCE.eTag(TAG, "onActivityResult Unknown requestCode or listener is null");            onDestroy(activity);            return;        }        if (resultCode != android.app.Activity.RESULT_OK) {            YLogUtil.INSTANCE.eTag(TAG, "onActivityResult--cancel--resultCode", resultCode);            onDestroy(activity);            return;        }        switch (requestCode) {            case REQUEST_CODE_CAMERA:                YLogUtil.INSTANCE.iTag(TAG, "onActivityResult camera");                scanFile(activity, picOptions.getCacheFile().getAbsolutePath(), picOptions.isCrop());                break;            case REQUEST_CODE_PICTURE:                if (data == null || data.getData() == null) {                    YLogUtil.INSTANCE.eTag(TAG, "onActivityResult picture data is null ");                    listener.onTakePicFail();                    onDestroy(activity);                    return;                }                YLogUtil.INSTANCE.iTag(TAG, "onActivityResult picture");                if (picOptions.isCrop()) {                    crop(activity, data.getData());                } else {                    YLogUtil.INSTANCE.iFormatTag(TAG, "onActivityResult picture callback uri：%s", data.getData());                    listener.onTakePicSuccess(data.getData());                    onDestroy(activity);                }                break;            case REQUEST_CODE_CUT_PIC:                YLogUtil.INSTANCE.iTag(TAG, "onActivityResult crop");                scanFile(activity, picOptions.getCacheFile().getAbsolutePath(), false);                break;        }    }    private void scanFile(final Activity activity, String path, final boolean isCrop) {        MediaScannerConnection.scanFile(activity, new String[]{path}, new String[]{"image/jpeg"}, new MediaScannerConnection.OnScanCompletedListener() {            @Override            public void onScanCompleted(String path, final Uri uri) {                HandlerUtil.INSTANCE.runOnUiThread(new Runnable() {                    @Override                    public void run() {                        if (isCrop) {                            crop(activity, uri);                        } else {                            YLogUtil.INSTANCE.iFormatTag(TAG, "scanFile camera or crop callback uri：%s", uri);                            listener.onTakePicSuccess(uri);                            onDestroy(activity);                        }                    }                });            }        });    }    /**     * 摧毁本库的 PicActivity     */    private void onDestroy(Activity activity) {        if (activity != null) {            activity.finish();        }    }}

4、Pic

public class Pic {    private PicManager picManager;    private Pic() {        picManager = new PicManager();    }    public static synchronized Pic getInstance() {        return PicHolder.instance;    }    private static class PicHolder {        private static final Pic instance = new Pic();    }    public PicManager getPicManager() {        return picManager;    }}

5、真正调起拍照或相册的activity，PicActivity

public class PicActivity extends AppCompatActivity {    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //不接受触摸屏事件        getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);        Pic.getInstance().getPicManager().behavior(this, getIntent(), savedInstanceState);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        Pic.getInstance().getPicManager().onActivityResult(this, requestCode, resultCode, data);    }}

6、注册PicActivity到manifest

7、示例：

调起摄像头

Pic.getInstance().picManager.setPicOptions(getPicOptions()).setListener(listener).takeCamera(context)

调起相册

Pic.getInstance().picManager.setPicOptions(getPicOptions()).setListener(listener).takePhotoAlbum(context)

private PicOptions getPicOptions(){        File cacheFile = File(FileUtils.getSdcardPath(), TimeUtil.nowTimeStr + ".jpg");        return PicOptions.beginBuilder()                .setCacheFile(cacheFile)                .setCrop(checkBox.isChecked)                .setCropHeight(200)                .setCropWidth(200)                .build();    }

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