Android 开发 - 新 Activity 打开太快

Question

我正在开发一款可以拍照然后切换到新 Activity 的应用。这是执行此操作的函数:

public void takePhoto(View view){
    final int REQUEST_IMAGE_CAPTURE = 1;

    // open camera
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if(takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }

    // open "Enter Info" screen
    startActivity(new Intent(MainActivity.this, EnterInfoActivity.class));
}

但是，“输入信息” Activity 在相机之前打开。我希望在开始新 Activity 之前打开相机。按“后退”将我带到相机，这对我来说意味着相机确实加载，但 Activity 被赋予更高的优先级。

Answer 1

private void captureImage() {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);

    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);

    // start the image capture Intent
    startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}

in onActivityResult Open Your Second Activity

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // if the result is capturing Image
    if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            // successfully captured the image
            // display it in image view
            previewCapturedImage();
        } else if (resultCode == RESULT_CANCELED) {
            // user cancelled Image capture
            Toast.makeText(getApplicationContext(),
                    "User cancelled image capture", Toast.LENGTH_SHORT)
                    .show();
        } else {
            // failed to capture image
            Toast.makeText(getApplicationContext(),
                    "Sorry! Failed to capture image", Toast.LENGTH_SHORT)
                    .show();
        }
    }
}

喵信息看这个，http://www.androidhive.info/2013/09/android-working-with-camera-api/