Question

我对Android开发相当新，并希望在片段中使用Android-Color_picker“AmbilWarna”。我收到了错误：

The constructor AmbilWarnaDialog(HomeFragment, int, new OnAmbilWarnaListener(){}) is undefined.

这是因为我使用Fragment而不是Fragment活动我使用的教程使用了Activity。

我正在使用以下教程： http://wptrafficanalyzer.in/blog/android-color-picker-application-using-ambilwarna-color-picker-library/

public class HomeFragment extends SherlockFragment implements TabListener {


private View homeView;

@Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container,
        Bundle savedInstanceState) {

    homeView = inflater.inflate(R.layout.homefragment, container, false);

    Button sColorBtn = (Button) homeView.findViewById(R.id.button2);
    OnClickListener clickListener = new OnClickListener() {

        @Override
        public void onClick(View v) {
            colorpicker();
        }
    };

    // Setting click event listener for the button
    sColorBtn.setOnClickListener(clickListener);
    return sColorBtn;
}

public void colorpicker() {
    //     initialColor is the initially-selected color to be shown in the rectangle on the left of the arrow.
    //     for example, 0xff000000 is black, 0xff0000ff is blue. Please be aware of the initial 0xff which is the alpha.

    AmbilWarnaDialog dialog = new AmbilWarnaDialog(this, 0xff0000ff, new OnAmbilWarnaListener() {

        // Executes, when user click Cancel button
        @Override
        public void onCancel(AmbilWarnaDialog dialog){
        }

        // Executes, when user click OK button
        @Override
        public void onOk(AmbilWarnaDialog dialog, int color) {
            Toast.makeText(getBaseContext(), "Selected Color : " + color, Toast.LENGTH_LONG).show();
        }
    });
    dialog.show();
}

Answer 1

使用此：

AmbilWarnaDialog dialog = new AmbilWarnaDialog(getActivity().getApplicationContext(), 0xff0000ff, new OnAmbilWarnaListener() {

    // Executes, when user click Cancel button
    @Override
    public void onCancel(AmbilWarnaDialog dialog){
    }

    // Executes, when user click OK button
    @Override
    public void onOk(AmbilWarnaDialog dialog, int color) {
        Toast.makeText(getBaseContext(), "Selected Color : " + color, Toast.LENGTH_LONG).show();
    }
});

因此，您必须使用getActivity().getApplicationContext()代替this。它将与Context一起返回。

Answer 2

如果你想要一个颜色选择器的片段解决方案，我已经使用 android-color-picker 的分支，其中使用 DialogFragment 并在配置更改时重新创建。这是链接：https://github.com/lomza/android-color-picker

在片段中使用android-color-picker？

2 个答案: