android 打开一个选择拍照或是本地图库的Intent，接受此Intent返回的信息

废话不多说，直接上代码：

一、生成请求图片选择的intent

/**
*生成一个选择本地图库或是相册的选择
**/
protected Intent createDefaultOpenableIntent() {
        // Create and return a chooser with the default OPENABLE
        // actions including the camera, camcorder and sound
        // recorder where available.
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");

        Intent chooser = createChooserIntent(createCameraIntent());
        chooser.putExtra(Intent.EXTRA_INTENT, i);
        return chooser;
    }

private Intent createChooserIntent(Intent... intents) {
        Intent chooser = new Intent(Intent.ACTION_CHOOSER);
        chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents);
        chooser.putExtra(Intent.EXTRA_TITLE, "选择图片来源");
        return chooser;


private Intent createCameraIntent() {
        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        //20161230  改变相机拍摄的图片的路径
        File externalDataDir = Environment
                .getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
        File cameraDataDir = new File(externalDataDir.getAbsolutePath()
                + File.separator + "browser-photo");
        cameraDataDir.mkdirs();
        mCameraFilePath = cameraDataDir.getAbsolutePath() + File.separator
                + System.currentTimeMillis() + ".jpg";
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                Uri.fromFile(new File(mCameraFilePath)));

        return cameraIntent;
    }

效果图：

二、接受返回的intent信息处理：

@Override
    protected void onActivityResult(int requestCode, int resultCode,
            Intent intent) {
        if (requestCode == FILECHOOSER_RESULTCODE) {
            if (null == mUploadMessage)
                return;
            Uri result = intent == null || resultCode != Activity.RESULT_OK ? null
                    : intent.getData();

            if (result == null && intent == null
                    && resultCode == Activity.RESULT_OK) {
                File cameraFile = new File(mCameraFilePath);

                if (cameraFile.exists()) {
                    result = Uri.fromFile(cameraFile);
                    sendBroadcast(new Intent(
                            Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, result));
                }

            }


//如果是网页调起的话把图片的uri传递过去          //mUploadMessage.onReceiveValue(result);
//          mUploadMessage = null;
        }
//如果是自己处理选中的图片的话  图库的图片有可能是一个本地文件的映射，需要从数据库查到真实的地址
        }

选择的图片的uri与本地图片的映射关系获取真实路径

eg:可能返回的uri:content:///external/images/media/4873
file:///storage/emulated/0/DCIM/browser-photo/1484193423183.jpg

public static String getRealFilePath( final Context context, final Uri uri ) {
        if ( null == uri ) return null;
        final String scheme = uri.getScheme();
        String data = null;
        if ( scheme == null )
            data = uri.getPath();
        else if ( ContentResolver.SCHEME_FILE.equals( scheme ) ) {
            data = uri.getPath();
        } else if ( ContentResolver.SCHEME_CONTENT.equals( scheme ) ) {
            Cursor cursor = context.getContentResolver().query( uri, new String[] { ImageColumns.DATA }, null, null, null );
            if ( null != cursor ) {
                if ( cursor.moveToFirst() ) {
                    int index = cursor.getColumnIndex( ImageColumns.DATA );
                    if ( index > -1 ) {
                        data = cursor.getString( index );
                    }
                }
                cursor.close();
            }
        }
        return data;
    }

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