Android获取系统图片

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    protected void selectPicFromLocal() {        Intent intent;        if (Build.VERSION.SDK_INT < 19) {            intent = new Intent(Intent.ACTION_GET_CONTENT);            intent.setType("image/*");        } else {            intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);        }        startActivityForResult(intent, REQUEST_CODE_LOCAL);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (resultCode == Activity.RESULT_OK) {            if (requestCode == REQUEST_CODE_LOCAL) { // send local image                if (data != null) {                    Uri selectedImage = data.getData();                    if (selectedImage != null) {                        sendPicByUri(selectedImage);                    }                }            }        }    }    /**     * send image     *     * @param selectedImage     */    protected void sendPicByUri(Uri selectedImage) {        String[] filePathColumn = {MediaStore.Images.Media.DATA};        Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);        if (cursor != null) {            cursor.moveToFirst();            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);            String picturePath = cursor.getString(columnIndex);            cursor.close();            cursor = null;            if (picturePath == null || picturePath.equals("null")) {                Toast toast = Toast.makeText(this, "没找到图片", Toast.LENGTH_SHORT);                toast.setGravity(Gravity.CENTER, 0, 0);                toast.show();                return;            }            sendImageMessage(picturePath);        } else {            File file = new File(selectedImage.getPath());            if (!file.exists()) {                Toast toast = Toast.makeText(this, "没找到图片", Toast.LENGTH_SHORT);                toast.setGravity(Gravity.CENTER, 0, 0);                toast.show();                return;            }            sendImageMessage(file.getAbsolutePath());        }    }
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