兼容android 11 唤起系统相机拍照并显示（建议大家从android 10开始适配，我就遇到了部分android 10手机也出现这个问题）

本文是记录兼容android 11的唤起系统相机拍照并正常显示，此处我默认已经获取到相机和读写的权限。

打开相机

   /*** 保存 photoUri*/private Uri photoUri;/*** 打开相机*/private void openCamera() {Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//确保有相机来处理Intentif (takePictureIntent.resolveActivity(getPackageManager()) != null) {File photoFile = saveFileName();if (photoFile != null) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {//适配Android 7.0文件权限，通过FileProvider创建一个content类型的UriphotoUri = FileProvider.getUriForFile(getApplicationContext(), "com.stg.rouge.activity.fileprovider", photoFile);} else {photoUri = getDestinationUri();}takePictureIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);startActivityForResult(takePictureIntent, 10086);}}}/*** 获取 Uri* @return*/private Uri getDestinationUri(){String fileName = String.format("winetalk_%s.jpg", System.currentTimeMillis());File cropFile = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), fileName);return Uri.fromFile(cropFile);}//当前路径，拍照回调后需要使用private String currentPath=null;/*** 保存照片路径* @return*/private File saveFileName(){File newFolder = this.getExternalFilesDir(Environment.DIRECTORY_PICTURES);SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");Date date = new Date(System.currentTimeMillis());String name =format.format(date)+".jpg" ;File ji=null;try {ji=new File(newFolder+"/"+name);ji.createNewFile();currentPath = ji.getAbsolutePath();} catch (Exception e) {e.printStackTrace();}return ji;}

记住，配置文件的写法：

<providerandroid:name="androidx.core.content.FileProvider"android:authorities="com.stg.rouge.activity.fileprovider"android:exported="false"android:grantUriPermissions="true"tools:replace="android:authorities"><meta-dataandroid:name="android.support.FILE_PROVIDER_PATHS"android:resource="@xml/file_paths_public"tools:replace="android:resource" /></provider>

而res/xml/file_paths_public文件中要添加如下路径：

<external-path name="external_files" path="." />

拍照后的回调

@SuppressWarnings("unchecked")@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);G.look("onActivityResult!!!!!!");switch (requestCode) {case 10086:G.look("10086");if (G.isEmpty(currentPath)) {G.toast(context, "拍照失败");return;}if (resultCode == RESULT_OK) {G.look("currentPath=" + currentPath);//                    String filepath = PhotoBitmapUtils.amendRotatePhoto// (currentPhotoPath, this);try {File file1=null;if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { //兼容android 11，不然在android 11 上无法拿到图片file1 = new Compressor(this).setCompressFormat(Bitmap.CompressFormat.JPEG).setDestinationDirectoryPath(C.getDownloadPath(context)).compressToFile(currentPath);}else {file1 = new Compressor(this).setCompressFormat(Bitmap.CompressFormat.JPEG).setDestinationDirectoryPath(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsolutePath()).compressToFile(currentPath);}String absolutePath = file1.getAbsolutePath(); //我这里需要的是拍照后照片的路径，至于大家是否需要别的，反正都有了file，可以自己转换。//下面这是我自己项目的东西，大家没有必要细究ImageInfoBean bean = new ImageInfoBean();bean.path = absolutePath;if (!G.isListNullOrEmpty(chooseimages)){chooseimages.add(bean);}else {chooseimages = new ArrayList<>();chooseimages.add(bean);}setImageList();} catch (IOException e) {G.look("IOException: "+e.toString());e.printStackTrace();}}break;}}

 /*** 公共方法，兼容android 11* 存储路径* @param context* @return*/public static String getDownloadPath(Context context) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { //android 11return Constants.SDCardConstants.getDir(context) + File.separator;}else {return Environment.getExternalStorageDirectory() + "/winetalk/";}}

Constants工具类

public class Constants {/*** 文件存储相关常量*/public static class SDCardConstants {private static final String TAG = "SDCardConstants";/*** 转码文件后缀*/public final static String TRANSCODE_SUFFIX = ".mp4_transcode";/*** 裁剪文件后缀*/public final static String CROP_SUFFIX = "-crop.mp4";/*** 合成文件后缀*/public final static String COMPOSE_SUFFIX = "-compose.mp4";/*** 裁剪 & 录制 & 转码输出文件的目录* android Q 版本默认路径* /storage/emulated/0/Android/data/包名/files/Media/* android Q 以下版本默认"/sdcard/DCIM/Camera/"*/public static String getDir(Context context) {String dir;if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {dir = context.getExternalFilesDir("") + File.separator + "Media" + File.separator;} else {dir = Environment.getExternalStorageDirectory() + File.separator + "DCIM"+ File.separator + "Camera" + File.separator;}File file = new File(dir);if (!file.exists()) {//noinspection ResultOfMethodCallIgnoredfile.mkdirs();}return dir;}/*** 获取外部缓存目录 版本默认"/storage/emulated/0/Android/data/包名/file/Cache/svideo"** @param context Context* @return string path*/public static String getCacheDir(Context context) {File cacheDir = new File(context.getExternalCacheDir(), "svideo");if (!cacheDir.exists()) {cacheDir.mkdirs();}return cacheDir.exists() ? cacheDir.getPath() : "";}/*** 清空外部缓存目录文件 "/storage/emulated/0/Android/data/包名/file/Cache/svideo"** @param context Context*/public static void clearCacheDir(Context context) {final File cacheDir = new File(context.getExternalCacheDir(), "svideo");ThreadUtils.runOnSubThread(new Runnable() {@Overridepublic void run() {boolean b = deleteFile(cacheDir);Log.i(TAG, "delete cache file " + b);}});}/*** 递归删除文件/目录* @param file File*/private static boolean deleteFile(File file) {if (file == null || !file.exists()) {return true;}if (file.isDirectory()) {File[] files = file.listFiles();if (files == null) {return true;}for (File f : files) {deleteFile(f);}}return file.delete();}}
}

Compressor工具类

public class Compressor {//max width and height values of the compressed image is taken as 612x816private int maxWidth = 612;private int maxHeight = 816;  //缩放比例，亲测不失真private Bitmap.CompressFormat compressFormat = Bitmap.CompressFormat.JPEG;private int quality = 90;private String destinationDirectoryPath;public Compressor(Context context) {destinationDirectoryPath = context.getCacheDir().getPath() + File.pathSeparator + "Compressor";}public Compressor setMaxWidth(int maxWidth) {this.maxWidth = maxWidth;return this;}public Compressor setMaxHeight(int maxHeight) {this.maxHeight = maxHeight;return this;}public Compressor setCompressFormat(Bitmap.CompressFormat compressFormat) {this.compressFormat = compressFormat;return this;}public Compressor setQuality(int quality) {this.quality = quality;return this;}public Compressor setDestinationDirectoryPath(String destinationDirectoryPath) {this.destinationDirectoryPath = destinationDirectoryPath;return this;}public File compressToFile(File imageFile) throws IOException {return compressToFile(imageFile, imageFile.getName());}public File compressToFile(File imageFile, String compressedFileName) throws IOException {return ImageUtil.compressImage(imageFile, maxWidth, maxHeight, compressFormat, quality,destinationDirectoryPath + File.pathSeparator + compressedFileName);}public File compressToFile(String imageFile,File file, String compressedFileName) throws IOException {return ImageUtil.compressImage(imageFile,file, maxWidth, maxHeight, compressFormat, quality,destinationDirectoryPath + File.pathSeparator + compressedFileName);}public File compressToFile(String imageFile) throws IOException {File file = new File(imageFile);return compressToFile(imageFile,file, file.getName());}public Bitmap compressToBitmap(File imageFile) {return ImageUtil.decodeSampledBitmapFromFile(imageFile, maxWidth, maxHeight);}
}

ImageUtil工具类

class ImageUtil {private ImageUtil() {}static File compressImage(File imageFile, int reqWidth, int reqHeight, Bitmap.CompressFormat compressFormat, int quality, String destinationPath) throws IOException {FileOutputStream fileOutputStream = null;try {fileOutputStream = new FileOutputStream(destinationPath);// write the compressed bitmap at the destination specified by destinationPath.Bitmap bitmap = decodeSampledBitmapFromFile(imageFile, reqWidth, reqHeight);bitmap.compress(compressFormat, quality, fileOutputStream);} finally {if (fileOutputStream != null) {fileOutputStream.flush();fileOutputStream.close();}}return new File(destinationPath);}static File compressImage(String path,File imageFile, int reqWidth, int reqHeight, Bitmap.CompressFormat compressFormat, int quality, String destinationPath) throws IOException {FileOutputStream fileOutputStream = null;// 取得图片旋转角度int angle = readPictureDegree(path);try {fileOutputStream = new FileOutputStream(destinationPath);// write the compressed bitmap at the destination specified by destinationPath.
//            Bitmap bitmap = decodeSampledBitmapFromFile(imageFile, reqWidth, reqHeight);// 修复图片被旋转的角度Bitmap bitmap = rotaingImageView(angle, decodeSampledBitmapFromFile(imageFile, reqWidth, reqHeight));bitmap.compress(compressFormat, quality, fileOutputStream);} finally {if (fileOutputStream != null) {fileOutputStream.flush();fileOutputStream.close();}}return new File(destinationPath);}/*** 读取照片旋转角度** @param path 照片路径* @return 角度*/public static int readPictureDegree(String path) {int degree = 0;try {ExifInterface exifInterface = new ExifInterface(path);int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);switch (orientation) {case ExifInterface.ORIENTATION_ROTATE_90:degree = 90;break;case ExifInterface.ORIENTATION_ROTATE_180:degree = 180;break;case ExifInterface.ORIENTATION_ROTATE_270:degree = 270;break;}} catch (IOException e) {e.printStackTrace();}return degree;}/*** 旋转图片* @param angle 被旋转角度* @param bitmap 图片对象* @return 旋转后的图片*/public static Bitmap rotaingImageView(int angle, Bitmap bitmap) {Bitmap returnBm = null;// 根据旋转角度，生成旋转矩阵Matrix matrix = new Matrix();matrix.postRotate(angle);try {// 将原始图片按照旋转矩阵进行旋转，并得到新的图片returnBm = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);} catch (OutOfMemoryError e) {}if (returnBm == null) {returnBm = bitmap;}if (bitmap != returnBm) {bitmap.recycle();}return returnBm;}static Bitmap decodeSampledBitmapFromFile(File imageFile, int reqWidth, int reqHeight) {// First decode with inJustDecodeBounds=true to check dimensionsBitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;BitmapFactory.decodeFile(imageFile.getAbsolutePath(), options);options.inPreferredConfig = Bitmap.Config.RGB_565;// Calculate inSampleSizeoptions.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);// Decode bitmap with inSampleSize setoptions.inJustDecodeBounds = false;return BitmapFactory.decodeFile(imageFile.getAbsolutePath(), options);}private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {// Raw height and width of imagefinal int height = options.outHeight;final int width = options.outWidth;int inSampleSize = 1;if (height > reqHeight || width > reqWidth) {final int halfHeight = height / 2;final int halfWidth = width / 2;// Calculate the largest inSampleSize value that is a power of 2 and keeps both// height and width larger than the requested height and width.while ((halfHeight / inSampleSize) >= reqHeight && (halfWidth / inSampleSize) >= reqWidth) {inSampleSize *= 2;}}return inSampleSize;}}

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兼容android 11 唤起系统相机拍照并显示

兼容android 11 唤起系统相机拍照并显示（建议大家从android 10开始适配，我就遇到了部分android 10手机也出现这个问题）

打开相机

拍照后的回调

兼容android 11 唤起系统相机拍照并显示相关推荐

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