相册选择+相机拍照，剪裁上传头像

参考文章：
https://blog.csdn.net/lmj623565791/article/details/72859156#
https://blog.csdn.net/liutaoblog/article/details/52452410
https://blog.csdn.net/q445697127/article/details/40537945

打开相机：

findViewById(R.id.ibCamera).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA}, 1000);
                } else {
                    //判断储存卡
                    if(!isExistSDCard()){
                        return;
                    }
                    File fileDir = new File(PathUtils.getRootPath());
                        if(!fileDir.exists()){
                            fileDir.mkdir();
                        }
                    imgFile = new File(fileDir, System.currentTimeMillis() + ".png");
                    Uri fileUri = FileProvider7.getUriForFile(MainActivity.this,imgFile);
                    goPhoneCamera(MainActivity.this, fileUri,2000);
                }
            }
        });


/**
     * 判断手机是否存在SD卡
     * @return
     */
    public static boolean isExistSDCard() {
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED))
            return true;
        else
            return false;
    }

public static void goPhoneCamera(Activity activity, Uri fileUri, int reqCode) {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if (intent.resolveActivity(activity.getPackageManager()) != null) {
            intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
            activity.startActivityForResult(intent, reqCode);
        }
    }

getRootPath()

//存储SD卡文件根目录
    public static final String FILE_DIR_ROOT = "photo";
public static String getRootPath() {
        return Environment.getExternalStorageDirectory()
                + File.separator + FILE_DIR_ROOT;
    }

FileProvider7.java

public final class FileProvider7 {

    private FileProvider7() {
    }

    public static Uri getUriForFile(Context context, File file) {
        Uri fileUri = null;
        if (Build.VERSION.SDK_INT >= 24) {
            fileUri = getUriForFile24(context, file);
        } else {
            fileUri = Uri.fromFile(file);
        }
        return fileUri;
    }

    public static Uri getUriForFile24(Context context, File file) {
        Uri fileUri = FileProvider.getUriForFile(context,
                context.getPackageName() + ".android7.fileprovider",
                file);
        return fileUri;
    }


    public static void setIntentDataAndType(Context context, Intent intent, String type, File file,
                                            boolean writeAble) {
        if (Build.VERSION.SDK_INT >= 24) {
            intent.setDataAndType(getUriForFile(context, file), type);
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            if (writeAble) {
                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            }
        } else {
            intent.setDataAndType(Uri.fromFile(file), type);
        }
    }

}

AndroidManifeast.xml

<provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.android7.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

file_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<resources >
    <!--相机图片保存图片路径，属于APP的存储空间-->
    <paths>
        <external-path name="camera_photos" path=""/>
    </paths>
</resources>

打开相册：

findViewById(R.id.ibPhoto).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                goPhotoAlbum(MainActivity.this,2001);
            }
        });

public static void goPhotoAlbum(Activity activity, int reqCode) {
        Intent intent = new Intent();
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.setType("image/*");
        } else {
            intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
        }
        activity.startActivityForResult(intent, reqCode);
    }

onActivityResult()监听

@Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode != Activity.RESULT_OK){ return; }
        if(requestCode == 2001){
            assert data != null;
            Uri imgUri = data.getData();
            assert imgUri != null;
            String pathStr = PathUtils.getImageAbsolutePath(MainActivity.this,imgUri);
            img = PathUtils.startUCrop(MainActivity.this,pathStr,2002,1,1);
        }else if(requestCode == 2000){
            String pathStr = imgFile.getAbsolutePath();
            img = PathUtils.startUCrop(MainActivity.this,pathStr,2002,1,1);
//            try {
//                FileInputStream fis = new FileInputStream(imgFile.getAbsoluteFile());
//                Bitmap bitmap = BitmapFactory.decodeStream(fis);
//            } catch (FileNotFoundException e) {
//                e.printStackTrace();
//            }
        }else if(requestCode == 2002){
//剪裁完成
        }
    }

使用UCrop剪裁功能https://github.com/Yalantis/uCrop

/**
     * 启动裁剪
     * @param activity 上下文
     * @param sourceFilePath 需要裁剪图片的绝对路径
     * @param requestCode 比如：UCrop.REQUEST_CROP
     * @param aspectRatioX 裁剪图片宽高比
     * @param aspectRatioY 裁剪图片宽高比
     * @return
     */
    public static String startUCrop(Activity activity, String sourceFilePath,
                                    int requestCode, float aspectRatioX, float aspectRatioY) {
        Uri sourceUri = Uri.fromFile(new File(sourceFilePath));
        File outDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
        if (!outDir.exists()) {
            outDir.mkdirs();
        }
        File outFile = new File(outDir, System.currentTimeMillis() + ".jpg");
        //裁剪后图片的绝对路径
        String cameraScalePath = outFile.getAbsolutePath();
        Uri destinationUri = Uri.fromFile(outFile);
        //初始化，第一个参数：需要裁剪的图片；第二个参数：裁剪后图片
        UCrop uCrop = UCrop.of(sourceUri, destinationUri);
        //初始化UCrop配置
        UCrop.Options options = new UCrop.Options();
        //设置裁剪图片可操作的手势
        options.setAllowedGestures(UCropActivity.SCALE, UCropActivity.ROTATE, UCropActivity.ALL);
        //是否隐藏底部容器，默认显示
        options.setHideBottomControls(true);
        //设置toolbar颜色
        options.setToolbarColor(ActivityCompat.getColor(activity, R.color.colorPrimary));
        //设置状态栏颜色
        options.setStatusBarColor(ActivityCompat.getColor(activity, R.color.colorPrimary));
        //是否能调整裁剪框
//        options.setFreeStyleCropEnabled(true);
        //UCrop配置
        uCrop.withOptions(options);
        //设置裁剪图片的宽高比，比如16：9
        uCrop.withAspectRatio(aspectRatioX, aspectRatioY);
        //uCrop.useSourceImageAspectRatio();
        //跳转裁剪页面
        uCrop.start(activity, requestCode);
        options.setCropFrameStrokeWidth(1000);
        return cameraScalePath;
    }

通过Uri获取图片绝对路径

/**
     * 根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换
     * @param imageUri
     * @author yaoxing
     * @date 2014-10-12
     */
    @TargetApi(19)
    public static String getImageAbsolutePath(Activity context, Uri imageUri) {
        if (context == null || imageUri == null)
            return null;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, imageUri)) {
            if (isExternalStorageDocument(imageUri)) {
                String docId = DocumentsContract.getDocumentId(imageUri);
                String[] split = docId.split(":");
                String type = split[0];
                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }
            } else if (isDownloadsDocument(imageUri)) {
                String id = DocumentsContract.getDocumentId(imageUri);
                Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                return getDataColumn(context, contentUri, null, null);
            } else if (isMediaDocument(imageUri)) {
                String docId = DocumentsContract.getDocumentId(imageUri);
                String[] split = docId.split(":");
                String type = split[0];
                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }
                String selection = MediaStore.Images.Media._ID + "=?";
                String[] selectionArgs = new String[] { split[1] };
                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        } // MediaStore (and general)
        else if ("content".equalsIgnoreCase(imageUri.getScheme())) {
            // Return the remote address
            if (isGooglePhotosUri(imageUri))
                return imageUri.getLastPathSegment();
            return getDataColumn(context, imageUri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(imageUri.getScheme())) {
            return imageUri.getPath();
        }
        return null;
    }

    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
        Cursor cursor = null;
        String column = MediaStore.Images.Media.DATA;
        String[] projection = { column };
        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
            if (cursor != null && cursor.moveToFirst()) {
                int index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is Google Photos.
     */
    public static boolean isGooglePhotosUri(Uri uri) {
        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
    }

完成！