Java Code Examples for android.widget.ScrollView#setOnTouchListener()

private void initBottomNavigationBar(ScrollView view) {
    // 底部navigation bar的show hide
    view.setOnTouchListener((v, event) -> {
        NavigationTabBar navigationTabBar = getActivity().findViewById(R.id.ntb);
        switch (event.getAction()) {
            case MotionEvent.ACTION_MOVE:
                if (event.getHistorySize() < 1)
                    return false;
                float y = event.getY();
                float historicalY = event.getHistoricalY(event.getHistorySize() - 1);
                if (y > historicalY)
                    navigationTabBar.show();
                else
                    navigationTabBar.hide();
        }
        return false;
    });
}
 

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View root = inflater.inflate(R.layout.fragment_scroll_view, container, false);

    header = root.findViewById(R.id.header_image_view);
    scrollView = (ScrollView) root.findViewById(R.id.scroll_view);
    BounceTouchListener bounceTouchListener = BounceTouchListener.create(scrollView, R.id.content,
            new BounceTouchListener.OnTranslateListener() {
                @Override
                public void onTranslate(float translation) {
                    if (translation > 0) {
                        float scale = ((2 * translation) / header.getMeasuredHeight()) + 1;
                        header.setScaleX(scale);
                        header.setScaleY(scale);
                    }
                }
            }
    );

    scrollView.setOnTouchListener(bounceTouchListener);
    return root;
}
 

private void startBackAnim() {
    // forbidden scrolling
    ScrollView sv = (ScrollView) findViewById(R.id.sv);
    sv.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            return true;
        }
    });

    // start our anim
    ivAdd.animate()
            .setDuration(200)
            .scaleX(0)
            .scaleY(0);

    layoutAbout.animate()
            .setDuration(300)
            .alpha(0)
            .translationY(-30)
            .setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    // transition exit after our anim
                    EasyTransition.exit(DetailActivity.this, 800, new DecelerateInterpolator());
                }
            });
}
 

private void init() {
    scrollView = (ScrollView) findViewById(R.id.scroll_view);
    AutoScrollHelper autoScrollHelper = new ScrollViewAutoScrollHelper(scrollView);
    autoScrollHelper.setEnabled(true);
    scrollView.setOnTouchListener(autoScrollHelper);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Android version >= 18 -> set orientation fullUser
    if (Build.VERSION.SDK_INT >= 18)
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_USER);

    // Android version < 18 -> set orientation fullSensor
    else
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);

    // Initialize colours and font sizes arrays
    colourArr = getResources().getStringArray(R.array.colours);

    colourArrResId = new int[colourArr.length];
    for (int i = 0; i < colourArr.length; i++)
        colourArrResId[i] = Color.parseColor(colourArr[i]);

    fontSizeArr = new int[] {14, 18, 22}; // 0 for small, 1 for medium, 2 for large
    fontSizeNameArr = getResources().getStringArray(R.array.fontSizeNames);

    setContentView(R.layout.activity_edit);

    // Init layout components
    toolbar = (Toolbar)findViewById(R.id.toolbarEdit);
    titleEdit = (EditText)findViewById(R.id.titleEdit);
    bodyEdit = (EditText)findViewById(R.id.bodyEdit);
    relativeLayoutEdit = (RelativeLayout)findViewById(R.id.relativeLayoutEdit);
    ScrollView scrollView = (ScrollView)findViewById(R.id.scrollView);

    imm = (InputMethodManager) this.getSystemService(INPUT_METHOD_SERVICE);

    if (toolbar != null)
        initToolbar();

    // If scrollView touched and note body doesn't have focus -> request focus and go to body end
    scrollView.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (!bodyEdit.isFocused()) {
                bodyEdit.requestFocus();
                bodyEdit.setSelection(bodyEdit.getText().length());
                // Force show keyboard
                imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
                        InputMethodManager.HIDE_IMPLICIT_ONLY);

                return true;
            }

            return false;
        }
    });

    // Get data bundle from MainActivity
    bundle = getIntent().getExtras();

    if (bundle != null) {
        // If current note is not new -> initialize colour, font, hideBody and EditTexts
        if (bundle.getInt(NOTE_REQUEST_CODE) != NEW_NOTE_REQUEST) {
            colour = bundle.getString(NOTE_COLOUR);
            fontSize = bundle.getInt(NOTE_FONT_SIZE);
            hideBody = bundle.getBoolean(NOTE_HIDE_BODY);

            titleEdit.setText(bundle.getString(NOTE_TITLE));
            bodyEdit.setText(bundle.getString(NOTE_BODY));
            bodyEdit.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSize);

            if (hideBody)
                menuHideBody.setTitle(R.string.action_show_body);
        }

        // If current note is new -> request keyboard focus to note title and show keyboard
        else if (bundle.getInt(NOTE_REQUEST_CODE) == NEW_NOTE_REQUEST) {
            titleEdit.requestFocus();
            imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
        }

        // Set background colour to note colour
        relativeLayoutEdit.setBackgroundColor(Color.parseColor(colour));
    }

    initDialogs(this);
}