Question

我有：

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_foto);

    Intent intentFotocamera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); //creo un timestamp univoco

    File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
    imagesFolder.mkdirs(); //creo un nuovo album

    File image = new File(imagesFolder, "QR_" + timeStamp + ".png"); //concateno
    Uri uriSavedImage = Uri.fromFile(image);

    intentFotocamera.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
    startActivityForResult(intentFotocamera, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}

现在，当用户按下照片确认按钮（然后在本地保存）时，我想创建一个新活动，因为我想在我的应用程序中打印这张照片。

如何创建新活动？

Answer 1

在覆盖方法onActivityResult（）中启动新活动。

https://developer.android.com/training/basics/intents/result.html

示例：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent 
data) {
// Check which request we're responding to
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
    // Make sure the request was successful
    if (resultCode == RESULT_OK) {
        // The user picked a contact.
        // The Intent's data Uri identifies which contact was selected.

        // Do something with the contact here (bigger example below)
    }
}
}

Answer 2

您想要打开新活动并显示最近拍摄的照片吗？

以下是如何做到这一点。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    try {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == REQUEST_CODE  && resultCode  == RESULT_OK) {

                    "handle here"

        }
    } catch (Exception ex) {

    }

}

相机意图后的新活动

2 个答案: