Android获取系统图片

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());
}
}