如何从安卓中的片段启动相机

Question

我需要在我的 CameraFragment.java 文件中有一个相机函数。我已经有了相机的代码，它正在一个空的应用程序中工作（当我把它放在我的 MainActivity 中时），但我不知道将代码放在我的 CameraFragment.java 中的什么位置。

我真的是Android Studio的初学者，但我在互联网上找不到答案。也是堆栈溢出上的新功能。

相机片段.java

public class CameraFragment extends Fragment{
public static final String EXTRA_INFO = "default";
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_camera, container, false);
}
}

我需要在我的相机片段文件中使用以下代码：

public class MainActivity extends AppCompatActivity {
private Button btnCapture;
private ImageView imgCapture;
private static final int Image_Capture_Code = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_camera);
    btnCapture =(Button)findViewById(R.id.btnTakePicture);
    imgCapture = (ImageView) findViewById(R.id.capturedImage);
    btnCapture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent cInt = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cInt,Image_Capture_Code);
        }
    });
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent 
    data) {
    if (requestCode == Image_Capture_Code) {
        if (resultCode == RESULT_OK) {
            Bitmap bp = (Bitmap) data.getExtras().get("data");
            imgCapture.setImageBitmap(bp);
        } else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
        }
    }
}
}

Answer 1

让我知道这对你来说是如何工作的。如果您需要更多设置帮助，请发表评论。

public class CameraFragment extends Fragment {
public static final String EXTRA_INFO = "default";
private Button btnCapture;
private ImageView imgCapture;
private static final int Image_Capture_Code = 1;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_camera, container, false);
    btnCapture =(Button) view.findViewById(R.id.btnTakePicture);
    imgCapture = (ImageView) view.findViewById(R.id.capturedImage);
    btnCapture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent cInt = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cInt,Image_Capture_Code);
        }
    });
    return view;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == Image_Capture_Code) {
        if (resultCode == RESULT_OK) {
            Bitmap bp = (Bitmap) data.getExtras().get("data");
            imgCapture.setImageBitmap(bp);
        } else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(getActivity(), "Cancelled", Toast.LENGTH_LONG).show();
        }
    }
}}

Answer 2

在片段中使用与活动相同，但使方法公开试试这个代码

public class ChatFragment extends Fragment {
private RecyclerView chatRecylerview;
View view;
ChatUserlistAdapter userlistAdapter;
LinearLayoutManager manager;
ArrayList<HashMap<String, String>> userDetail = new ArrayList<>();
HashMap<String, String> data;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.fragment_chat, container, false);
    btnCapture =(Button)view.findViewById(R.id.btnTakePicture);
    imgCapture = (ImageView)view.findViewById(R.id.capturedImage);
    btnCapture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent cInt = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cInt,Image_Capture_Code);
        }
    });
    return view;
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == Image_Capture_Code) {
        if (resultCode == RESULT_OK) {
            Bitmap bp = (Bitmap) data.getExtras().get("data");
            imgCapture.setImageBitmap(bp);
        } else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
        }
    }
}

}