Android 拍照以及相册中选择(适配高版本)————上传多张照片之压缩处理、在线预览可伸缩放大(二)

______ Introduction ______

前言

上一篇文章刚给大家总结完，关于上传头像的功能。此文章所述主要是关于上传头像的具体流程以及如何对照片做裁剪处理，回调给控件显示；当然重中之重适配了Android高版本，有兴趣的大家可以去看一下:

Android 拍照以及相册中选择(适配高版本)————上传头像并裁剪(一)

本篇将从另一个开发场景，给大家带来关于上传多张照片的需求。

记得之前拿华为的测试机拍出来的一张照片，就要十几M。在图片量过大的情况下，必须要对图片做压缩处理，减少内存损耗，也尽量避免占用内存；每当图片过大，或是多张图片一起上传的时候总会造成oom。

接下来，通过本篇让我们一起来实现，多张图片上传并做压缩处理之后，可以实现在线预览以及伸缩放大等功能。

______ Animation Effect ______

效果

实测android 8、android 9、android 11、android 13、鸿蒙系统均有效；
手机机型分别为OPPO、华为、VIVO手机、小米、小米平板。

VIVO android 13

华为鸿蒙系统2.0.1

______ Function ______

功能

动态申请拍照，读，写权限
自定义弹出框
调用系统相机拍照
3.1 调用系统相机申请拍照权限回调
3.2 拍照完成回调
3.3 对图片做压缩处理
自动获取sdk权限
4.1 访问相册完成回调
4.2 对图片做压缩处理
可在线预览照片

______ Concrete Realization ______

具体实现

（1）动态申请权限

    public static String[] permission = {Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.CAMERA};AppUtils.requestPermission(permission);@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);switch (requestCode) {//调用系统相机申请拍照权限回调case CAMERA_PERMISSIONS_REQUEST_CODE: {if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {if (AppUtils.hasSdcard()) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {imageUri = FileProvider.getUriForFile(MainActivity.this, "com.harry.takepicture.provider", cardImage);} else {imageUri = Uri.fromFile(cardImage);}PhotoUtils.takePicture(this, imageUri, CODE_CAMERA_CARD_REQUEST);} else {ToastUtils.showShort(this, "设备没有SD卡！");}} else {ToastUtils.showShort(this, "请允许打开相机！！");}break;}}}

   public class AppUtils {/*** 申请权限** @param permission*/public static void requestPermission(String[] permission) {BaseActivity.requestRunTimePermission(permission, new PermissionListener() {@Overridepublic void onGranted() {Log.e("tb", "所有权限授权成功");}@Overridepublic void onGranted(List<String> grantedPermission) {Log.e("tb", "授权成功集合权限---" + grantedPermission);}@Overridepublic void onDenied(List<String> deniedPermission) {Log.e("tb", "授权失败集合权限---" + deniedPermission);}});}
}

（2）自定义弹出框

本篇主要内容为Camera相关，忽略…

（3.1）调用系统相机拍照

    /*** 拍照** @param*/private void takePhoto() {if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED|| ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA)) {ToastUtils.showShort(this, "您已经拒绝过一次");}ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE}, CAMERA_PERMISSIONS_REQUEST_CODE);} else {//有权限直接调用系统相机拍照if (AppUtils.hasSdcard()) {cardImage = new File(Environment.getExternalStorageDirectory().getPath(), System.currentTimeMillis() + ".jpg");//通过FileProvider创建一个content类型的Uriif (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {imageUri = FileProvider.getUriForFile(this, "com.harry.takepicture.provider", cardImage);} else {imageUri = Uri.fromFile(cardImage);}PhotoUtils.takePicture(this, imageUri, CODE_CAMERA_CARD_REQUEST);} else {ToastUtils.showShort(this, "设备没有SD卡！");}}}

（3.2）处理拍照回调

 /*** 执行回调** @param requestCode* @param resultCode* @param data*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {fileCropUri = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis() + ".jpg");switch (requestCode) {//拍照完成回调case CODE_CAMERA_CARD_REQUEST:cropImageUri = Uri.fromFile(fileCropUri);String img = cardImage.getAbsolutePath();//img就是压缩后的图片String imgPic = BitmapUtil.compressImageUpload(img);Log.e("tb", "paths----------" + imgPic);urlimg.add(0, imgPic);if (null != imgPic) {showPic(imgPic);}break;               default:}}}

（3.3）对图片做压缩处理

BitmapUtil.compressImageUpload(img);

/*** @author 拉莫帅* @date 2021/9/9* @address* @Desc BitmapUtil*/
public class BitmapUtil {/*** 质量压缩方法** @param image* @return*/private static Bitmap compressImage(Bitmap image) {ByteArrayOutputStream baos = new ByteArrayOutputStream();image.compress(Bitmap.CompressFormat.JPEG, 100, baos);int options = 100;while (baos.toByteArray().length / 1024 > 100) {baos.reset();image.compress(Bitmap.CompressFormat.JPEG, options, baos);options -= 10;}ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);return bitmap;}/*** 图片按比例大小压缩方法（根据路径获取图片并压缩）** @param srcPath* @return*/private static Bitmap getImage(String srcPath) {BitmapFactory.Options newOpts = new BitmapFactory.Options();newOpts.inJustDecodeBounds = true;Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);// 此时返回bm为空newOpts.inJustDecodeBounds = false;int w = newOpts.outWidth;int h = newOpts.outHeight;// 现在主流手机比较多是800*480分辨率，所以高和宽我们设置为float hh = 800f;// 这里设置高度为800ffloat ww = 480f;// 这里设置宽度为480f// 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可int be = 1;// be=1表示不缩放if (w > h && w > ww) {// 如果宽度大的话根据宽度固定大小缩放be = (int) (newOpts.outWidth / ww);} else if (w < h && h > hh) {// 如果高度高的话根据宽度固定大小缩放be = (int) (newOpts.outHeight / hh);}if (be <= 0)be = 1;newOpts.inSampleSize = be;// 设置缩放比例// 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了bitmap = BitmapFactory.decodeFile(srcPath, newOpts);return compressImage(bitmap);// 压缩好比例大小后再进行质量压缩}/*** 将压缩的bitmap保存到SDCard卡临时文件夹，用于上传** @param filename* @param bit* @return*/private static String saveMyBitmap(String filename, Bitmap bit) {String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath() + "/laopai/";String filePath = baseDir + filename;File dir = new File(baseDir);if (!dir.exists()) {dir.mkdir();}File f = new File(filePath);try {f.createNewFile();FileOutputStream fOut = null;fOut = new FileOutputStream(f);bit.compress(Bitmap.CompressFormat.PNG, 100, fOut);fOut.flush();fOut.close();} catch (IOException e1) {e1.printStackTrace();}return filePath;}/*** 压缩上传路径** @param path* @return*/public static String compressImageUpload(String path) {String filename = path.substring(path.lastIndexOf("/") + 1);Bitmap image = getImage(path);return saveMyBitmap(filename, image);}/*** 清除缓存文件*/public static void deleteCacheFile() {File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/laopai/");RecursionDeleteFile(file);}/*** 递归删除*/private static void RecursionDeleteFile(File file) {if (file.isFile()) {file.delete();return;}if (file.isDirectory()) {File[] childFile = file.listFiles();if (childFile == null || childFile.length == 0) {file.delete();return;}for (File f : childFile) {RecursionDeleteFile(f);}file.delete();}}
}

（4）自动获取SDK权限

    /*** 自动获取sdk权限*/private void autoObtainStoragePermission() {if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSIONS_REQUEST_CODE);} else {PhotoUtils.openPic(this, CODE_GALLERY_CARD_REQUEST);}}

（4.1）访问相册完成回调

 /*** 执行回调** @param requestCode* @param resultCode* @param data*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {fileCropUri = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis() + ".jpg");switch (requestCode) {//访问相册完成回调case CODE_GALLERY_CARD_REQUEST:if (AppUtils.hasSdcard()) {cropImageUri = Uri.fromFile(fileCropUri);String path = GetPathFromUri.getPath(this, data.getData());//imgPath就是压缩后的图片String imgPath = BitmapUtil.compressImageUpload(path);Log.e("tb", "paths----------" + imgPath);urlimg.add(0, imgPath);if (null != imgPath) {showPic(imgPath);}} else {ToastUtils.showShort(this, "设备没有SD卡！");}break;default:}}}

（4.2）对图片做压缩处理 —> （3.3）

BitmapUtil.compressImageUpload(path);

（5）可在线预览照片

    // 显示图片List<String> pic = new ArrayList<>();/*** 展示** @param imgPic*/private void showPic(String imgPic) {pic.add(0, imgPic);picAdapter.notifyDataSetChanged();}

    // 进入预览界面Intent intent = new Intent(MainActivity.this, ShowImgActivity.class);intent.putExtra("image_path", pic.get(position));startActivity(intent);

对于预览图片，单点/多点触摸来进行图片缩放
采用的是开源PhotoView控件

implementation 'com.github.chrisbanes:PhotoView:1.2.6'

此项目个人采用的是jar的方式，依赖方式至上。

______ Full Implementation ______

完整实现

/*** @author 拉莫帅* @date 2023/4/01* @address* @Desc TakePicture 上传多张照片并压缩处理*/
public class MainActivity extends BaseActivity implements View.OnClickListener {public static String[] permission = {Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.CAMERA};private RecyclerView recycle;private Intent intent;private View view;private List<String> pic; // 显示图片private List<String> urlimg; // 上传图片路径private Uri cropImageUri;private File cardImage;private File fileCropUri;//裁剪的照片private Uri imageUri;//拍照所得到的图像的保存路径private static final int CAMERA_PERMISSIONS_REQUEST_CODE = 0x03;private static final int STORAGE_PERMISSIONS_REQUEST_CODE = 0x04;private static final int CODE_GALLERY_CARD_REQUEST = 0xa5;private static final int CODE_CAMERA_CARD_REQUEST = 0xa6;private PicAdapter picAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setStatusBg(1);AppUtils.requestPermission(permission);initView();initData();}@Overrideprotected View addContentLayout() {view = getLayoutInflater().inflate(R.layout.activity_main, contentLayout, false);return view;}private void initView() {recycle = findViewById(R.id.recycle);// 初始化数据urlimg = new ArrayList<>();pic = new ArrayList<>();pic.add(this.getResources().getResourceName(R.drawable.add_pic_icon));}private void initData() {// 初始化适配器picAdapter = new PicAdapter(this, pic);recycle.setLayoutManager(new GridLayoutManager(this, 3));recycle.setAdapter(picAdapter);//添加ItemDecoration，item之间的间隔int leftRight = AppUtils.dip2px(15, this);int topBottom = AppUtils.dip2px(15, this);recycle.addItemDecoration(new SpacesItemDecoration(leftRight, topBottom));picAdapter.setOnItemClickListener(new PicAdapter.OnItemClickListener() {@Overridepublic void onItemClick(View view, int position) {if (pic.size() > 2 && pic.get(position).equals(MainActivity.this.getResources().getResourceName(R.drawable.add_pic_icon))) {ToastUtils.showShort(MainActivity.this, "最多只能上传2张图片");} else {if (pic.get(position).equals(MainActivity.this.getResources().getResourceName(R.drawable.add_pic_icon))) {select();} else {intent = new Intent(MainActivity.this, ShowImgActivity.class);intent.putExtra("image_path", pic.get(position));startActivity(intent);}}}});picAdapter.setOnClickDelete(new PicAdapter.OnClickDelete() {@Overridepublic void myClickDelete(int pos) {if (pic.get(pos).equals(MainActivity.this.getResources().getResourceName(R.drawable.add_pic_icon))) {return;}if (pic.size() > 0) {pic.remove(pos);picAdapter.notifyDataSetChanged();}}});}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.userinfo_iv_head:select();break;case R.id.rl_head_camera:takePhoto();AppUtils.dismiss();break;case R.id.rl_head_photo:autoObtainStoragePermission();AppUtils.dismiss();break;case R.id.rl_head_cancel:AppUtils.dismiss();break;}}private void select() {AppUtils.selectPhoto(MainActivity.this, R.layout.dialog_head, R.layout.activity_main, this);}/*** 拍照** @param*/private void takePhoto() {if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED|| ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA)) {ToastUtils.showShort(this, "您已经拒绝过一次");}ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE}, CAMERA_PERMISSIONS_REQUEST_CODE);} else {//有权限直接调用系统相机拍照if (AppUtils.hasSdcard()) {cardImage = new File(Environment.getExternalStorageDirectory().getPath(), System.currentTimeMillis() + ".jpg");//通过FileProvider创建一个content类型的Uriif (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {imageUri = FileProvider.getUriForFile(this, "com.harry.takepicture.provider", cardImage);} else {imageUri = Uri.fromFile(cardImage);}PhotoUtils.takePicture(this, imageUri, CODE_CAMERA_CARD_REQUEST);} else {ToastUtils.showShort(this, "设备没有SD卡！");}}}@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);switch (requestCode) {//调用系统相机申请拍照权限回调case CAMERA_PERMISSIONS_REQUEST_CODE: {if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {if (AppUtils.hasSdcard()) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {imageUri = FileProvider.getUriForFile(MainActivity.this, "com.harry.takepicture.provider", cardImage);} else {imageUri = Uri.fromFile(cardImage);}PhotoUtils.takePicture(this, imageUri, CODE_CAMERA_CARD_REQUEST);} else {ToastUtils.showShort(this, "设备没有SD卡！");}} else {ToastUtils.showShort(this, "请允许打开相机！！");}break;}}}/*** 自动获取sdk权限*/private void autoObtainStoragePermission() {if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSIONS_REQUEST_CODE);} else {PhotoUtils.openPic(this, CODE_GALLERY_CARD_REQUEST);}}/*** 执行回调** @param requestCode* @param resultCode* @param data*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {fileCropUri = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis() + ".jpg");switch (requestCode) {//拍照完成回调case CODE_CAMERA_CARD_REQUEST:cropImageUri = Uri.fromFile(fileCropUri);String img = cardImage.getAbsolutePath();//img就是压缩后的图片String imgPic = BitmapUtil.compressImageUpload(img);Log.e("tb", "paths----------" + imgPic);urlimg.add(0, imgPic);if (null != imgPic) {showPic(imgPic);}break;//访问相册完成回调case CODE_GALLERY_CARD_REQUEST:if (AppUtils.hasSdcard()) {cropImageUri = Uri.fromFile(fileCropUri);String path = GetPathFromUri.getPath(this, data.getData());//imgPath就是压缩后的图片String imgPath = BitmapUtil.compressImageUpload(path);Log.e("tb", "paths----------" + imgPath);urlimg.add(0, imgPath);if (null != imgPath) {showPic(imgPath);}} else {ToastUtils.showShort(this, "设备没有SD卡！");}break;default:}}}/*** 展示** @param imgPic*/private void showPic(String imgPic) {pic.add(0, imgPic);picAdapter.notifyDataSetChanged();}
}

/*** @author 拉莫帅 * @date 2023/4/01* @address* @Desc PicAdapter适配器*/
public class PicAdapter extends RecyclerView.Adapter<PicAdapter.MyViewHolder> {private Context context;private OnItemClickListener onItemClickListener;private OnClickDelete onClickDelete;private List<String> ml;public PicAdapter(Context ctx, List<String> ml) {this.context = ctx;this.ml = ml;}public interface OnItemClickListener{void onItemClick(View view, int position);}public void setOnItemClickListener(OnItemClickListener onItemClickListener){this.onItemClickListener = onItemClickListener;}public interface OnClickDelete{void myClickDelete(int pos);}public void setOnClickDelete(OnClickDelete onClickDelete) {this.onClickDelete = onClickDelete;}@NonNull@Overridepublic MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {MyViewHolder holder = new MyViewHolder(LayoutInflater.from(context).inflate(R.layout.item_photo, parent, false));return holder;}@Overridepublic void onBindViewHolder(@NonNull final MyViewHolder holder, int position) {if(ml.get(position).equals(context.getResources().getResourceName(R.drawable.add_pic_icon))){ImageUtils.ImageIntDefault(context,context.getResources().getDrawable(R.drawable.add_pic_icon),holder.iv_image);}else{ImageUtils.ImageDefault(context,ml.get(position),holder.iv_image);}if(onItemClickListener!=null){holder.iv_image.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {int position = holder.getLayoutPosition();onItemClickListener.onItemClick(holder.iv_image, position);}});}if(onClickDelete!=null){holder.iv_delete.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {Log.e("tb","身份证删除-----------------------------------");int position = holder.getLayoutPosition();onClickDelete.myClickDelete(position);}});}}@Overridepublic int getItemCount() {return (ml.size() == 0 || ml == null) ? 0 : ml.size();}class MyViewHolder extends RecyclerView.ViewHolder {private ImageView iv_image,iv_delete;public MyViewHolder(View itemView) {super(itemView);iv_image = itemView.findViewById(R.id.iv_image);iv_delete = itemView.findViewById(R.id.iv_delete);}}
}

item_photo.xml:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="100dp"><ImageViewandroid:scaleType="centerCrop"android:id="@+id/iv_image"android:src="@drawable/add_pic_icon"android:layout_width="match_parent"android:layout_height="match_parent" /><ImageViewandroid:scaleType="fitXY"android:layout_gravity="right"android:id="@+id/iv_delete"android:layout_width="30dp"android:layout_height="28dp"android:src="@drawable/delete_icon" /></FrameLayout>

/*** @author 拉莫帅* @date 2023/4/01* @address* @Desc 预览照片*/
public class ShowImgActivity extends BaseActivity {private View view;private TextView title;private PhotoView iv_show;private String image_path;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setStatusBg(1);title = findViewById(R.id.title);title.setText("预览照片");iv_show = findViewById(R.id.iv_show);image_path = getIntent().getStringExtra("image_path");ImageUtils.ImageDefault(this, image_path, iv_show);}@Overrideprotected View addContentLayout() {view = getLayoutInflater().inflate(R.layout.activity_show_img, contentLayout, false);return view;}
}

activity_show_img.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@color/white"><uk.co.senab.photoview.PhotoViewandroid:id="@+id/iv_show"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true" />
</RelativeLayout>

______ Ending ______

结尾

关于Camera系列文章到这里就已经结束了！
节后赶紧来给大家更新了，本来五一之前就应该把连载篇，分享给大家。
基本上，关于相机也就这些东西；这里把它分享给大家，欢迎大家共同学习、留言探讨！

最后的最后，大家想要完整版的源代码，欢迎来start !
完整版源码下载地址：Android + <调用相机拍照 & 选择相册> + 数码相机

Android 拍照以及相册中选择(适配高版本)————上传多张照片之压缩处理、在线预览可伸缩放大(二)相关推荐

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