Android打开系统拍照&相册获取头像

来源：互联网发布：mac 储存应用编辑：程序博客网时间：2024/05/16 15:24

Android打开系统拍照&相册获取头像

现在许多应用都有上传头像的功能，再次奉上代开系统相册或打开系统相机拍照的实现，有的同学在测试小米手机上打开选择相册有奔溃，此代码已完美解决此问题…

楼主，做的头像需要经过裁剪之后和圆形处理…

1.设置点击打开相机&打开系统图库

                @Override                public void onClick(View v) {                    // 打开系统拍照程                    Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                    startActivityForResult(camera, CAMERA);                }                @Override                public void onClick(View v) {                    // 打开系统图库选择图片                    Intent picture = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);                    startActivityForResult(picture, PICTURE);                }

2.重写带结果启动的回调onActivityResult

@Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode == CAMERA && resultCode == RESULT_OK && data != null) {            // 拍照            Bundle bundle = data.getExtras();            // 获取相机返回的数据，并转换为图片格式            Bitmap bitmap = (Bitmap) bundle.get("data");            // bitmap圆形裁剪//            bitmap = BitmapUtils.zoom(bitmap, DensityUtil.dp2px(this, 62), DensityUtil.dp2px(this, 62));            bitmap = BitmapUtils.zoom(bitmap, DensityUtil.dp2px(this, 20), DensityUtil.dp2px(this, 20));            Bitmap circleBitmap = BitmapUtils.circleBitmap(bitmap);            //TODO 将图片上传到服务器//            ivIcon.setImageBitmap(circleBitmap);            uploadHeadpic(bitmap);            // 将图片保存在本地            try {                saveImage(circleBitmap);            } catch (FileNotFoundException e) {                e.printStackTrace();            }        } else if (requestCode == PICTURE && resultCode == RESULT_OK && data != null) {            //图库            String pathResult = null;  // 获取图片路径的方法调用            try {                Uri uri = data.getData();                pathResult = getPath(uri);                Log.e("TAG", "图片路径===" + pathResult);            } catch (Exception e) {                e.printStackTrace();            }            //这里返回的uri情况就有点多了            //**:在4.4.2之前返回的uri是:content://media/external/images/media/3951或者file://....在4.4.2返回的是content://com.android.providers.media.documents/document/image:3951或者            //总结：uri的组成，eg:content://com.example.project:200/folder/subfolder/etc            //content:--->"scheme"            //com.example.project:200-->"host":"port"--->"authority"[主机地址+端口(省略) =authority]            //folder/subfolder/etc-->"path" 路径部分            //android各个不同的系统版本,对于获取外部存储上的资源，返回的Uri对象都可能各不一样,所以要保证无论是哪个系统版本都能正确获取到图片资源的话            //就需要针对各种情况进行一个处理了            Bitmap decodeFile = BitmapFactory.decodeFile(pathResult);            Bitmap zoomBitmap = BitmapUtils.zoom(decodeFile, DensityUtil.dp2px(this, 20), DensityUtil.dp2px(this, 20));            // bitmap圆形裁剪p            Bitmap circleImage = BitmapUtils.circleBitmap(zoomBitmap);            // 真实项目当中，是需要上传到服务器的..这步我们就不做了。            uploadHeadpic(zoomBitmap);            try {                // 保存图片到本地                saveImage(circleImage);            } catch (FileNotFoundException e) {                e.printStackTrace();            }        }    }

3.获取图片路径

// 根据系统相册选择的文件获取路径    @SuppressLint("NewApi")    private String getPath(Uri uri) {//        int sdkVersion = Build.VERSION.SDK_INT;        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;        // 高于4.4.2的版本//        if (sdkVersion >= 19) {        if (isKitKat && DocumentsContract.isDocumentUri(mContext, uri)) {            Log.e("TAG", "uri auth: " + uri.getAuthority());            if (isExternalStorageDocument(uri)) {                String docId = DocumentsContract.getDocumentId(uri);                String[] split = docId.split(":");                String type = split[0];                if ("primary".equalsIgnoreCase(type)) {                    return Environment.getExternalStorageDirectory() + "/" + split[1];                }            } else if (isDownloadsDocument(uri)) {                final String id = DocumentsContract.getDocumentId(uri);                final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),                        Long.valueOf(id));                return getDataColumn(this, contentUri, null, null);            } else if (isMediaDocument(uri)) {                final String docId = DocumentsContract.getDocumentId(uri);                final String[] split = docId.split(":");                final 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;                }                final String selection = "_id=?";                final String[] selectionArgs = new String[]{split[1]};                return getDataColumn(this, contentUri, selection, selectionArgs);            } else if (isMedia(uri)) {                String[] proj = {MediaStore.Images.Media.DATA};                Cursor actualimagecursor = this.managedQuery(uri, proj, null, null, null);                int actual_image_column_index = actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);                actualimagecursor.moveToFirst();                return actualimagecursor.getString(actual_image_column_index);            }        } else if ("content".equalsIgnoreCase(uri.getScheme())) {            // Return the remote address            if (isGooglePhotosUri(uri))                return uri.getLastPathSegment();            return getDataColumn(this, uri, null, null);        } else if ("file".equalsIgnoreCase(uri.getScheme())) { // File            return uri.getPath();        }        return null;    }private String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {        Cursor cursor = null;        final String column = "_data";        final String[] projection = {column};        try {            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);            if (cursor != null && cursor.moveToFirst()) {                final int index = cursor.getColumnIndexOrThrow(column);                return cursor.getString(index);            }        } finally {            if (cursor != null)                cursor.close();        }        return null;    }    private boolean isExternalStorageDocument(Uri uri) {        return "com.android.externalstorage.documents".equals(uri.getAuthority());    }    public static boolean isDownloadsDocument(Uri uri) {        return "com.android.providers.downloads.documents".equals(uri.getAuthority());    }    public static boolean isMediaDocument(Uri uri) {        return "com.android.providers.media.documents".equals(uri.getAuthority());    }    public static boolean isMedia(Uri uri) {        return "media".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());    }

以上就是比较完整的代码了…

最后附上2篇参考文章：

文章1

文章2

Thanks all.

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