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

private void scrollTo() {
    if (scrollTo == 0)
        return;

    View view = getView();
    if (view == null)
        return;

    final ScrollView scroll = view.findViewById(R.id.scroll);
    if (scroll == null)
        return;

    final View child = scroll.findViewById(scrollTo);
    if (child == null)
        return;

    scrollTo = 0;

    scroll.post(new Runnable() {
        @Override
        public void run() {
            scroll.scrollTo(0, child.getTop());
        }
    });
}
 

protected void updateEditor(EditorActivity context) {
	final CodeEditText code = fragment.getCodeEditText();
	final HorizontalScrollView scrollerX = fragment.getCodeScrollerX();
	final ScrollView scrollerY = fragment.getCodeScroller();
	
	//Update the code area text
	code.setNoUndoText(getText());
	//Update the code area selection
	code.setSelection(getSelectionStart(), getSelectionEnd());
	
	code.post(code::updateBracketMatch);
	
	scrollerX.post(() -> scrollerX.scrollTo(getScrollX(), 0));
	
	scrollerY.post(() -> scrollerY.scrollTo(0, getScrollY()));
	
	context.supportInvalidateOptionsMenu();
}
 

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);
  final ScrollView scrollView = (ScrollView) findViewById(R.id.license_activity_scrollview);
  final int firstVisibleChar = savedInstanceState.getInt(STATE_SCROLL_POS);
  scrollView.post(
      new Runnable() {
        @Override
        public void run() {
          TextView textView = (TextView) findViewById(R.id.license_activity_textview);
          int firstVisibleLine = textView.getLayout().getLineForOffset(firstVisibleChar);
          int offset = textView.getLayout().getLineTop(firstVisibleLine);
          scrollView.scrollTo(0, offset);
        }
      });
}
 

private void terminalScroll() {
    if (DD) Log.d(TAG, "terminalScroll()");

    final ScrollView scrollView = (ScrollView) findViewById(R.id.scrollView);

    scrollView.post(new Runnable()
    {
        public void run()
        {
            scrollView.smoothScrollTo(0, mTxtTerminal.getBottom());
        }
    });
}
 

public void showOrHideCustomWindow() {
	if (timeFilter == getResources().getInteger(R.integer.time_filter_custom)) {
		findViewById(R.id.custom_window_view).setVisibility(View.VISIBLE);
		final ScrollView sv = (ScrollView)findViewById(R.id.scrollView);
		sv.post(new Runnable() {
			public void run() {
				sv.scrollTo(0, sv.getBottom());
			}
		});
	} else {
		findViewById(R.id.custom_window_view).setVisibility(View.GONE);
	}
}
 

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    final ScrollView scrollView = getScrollView();
    if (scrollView != null) {
        this.originalScrollY = note.getScrollY();
        scrollView.post(() -> scrollView.scrollTo(0, originalScrollY));
    }
}
 

private void jumpToOccurrence() {
    Layout layout = getLayout();
    if (layout == null) {
        Log.w(TAG, "getLayout() is null");
    } else if (getContent() == null || getContent().isEmpty()) {
        Log.w(TAG, "getContent is null or empty");
    } else if (currentOccurrence < 1) {
        // if currentOccurrence is lower than 1, jump to last occurrence
        currentOccurrence = occurrenceCount;
        jumpToOccurrence();
    } else if (searchQuery != null && !searchQuery.isEmpty()) {
        String currentContent = getContent().toLowerCase();
        int indexOfNewText = indexOfNth(currentContent, searchQuery.toLowerCase(), 0, currentOccurrence);
        if (indexOfNewText <= 0) {
            // Search term is not n times in text
            // Go back to first search result
            if (currentOccurrence != 1) {
                currentOccurrence = 1;
                jumpToOccurrence();
            }
            return;
        }
        String textUntilFirstOccurrence = currentContent.substring(0, indexOfNewText);
        int numberLine = layout.getLineForOffset(textUntilFirstOccurrence.length());

        if (numberLine >= 0) {
            ScrollView scrollView = getScrollView();
            if (scrollView != null) {
                scrollView.post(() -> scrollView.smoothScrollTo(0, layout.getLineTop(numberLine)));
            }
        }
    }
}
 

private void scroll(final int scrollDirection) {
    final ScrollView scrollView = (ScrollView) findViewById(R.id.scroll);
    scrollView.post(new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(scrollDirection);
        }
    });
}
 

public static void scrollToBottom(final ScrollView scrollView) {
    if (scrollView != null) {
        scrollView.post(new Runnable() {
            @Override
            public void run() {
                scrollView.fullScroll(ScrollView.FOCUS_DOWN);
            }
        });
    }
}
 

private void scrollTop() {
    final ScrollView scrollView = (ScrollView) this.findViewById(R.id.scrollview);

    scrollView.post(new Runnable() {
        public void run() {
            scrollView.scrollTo(0, 0);
        }
    });
}
 

/**
 * Add a message to the console and automatically scroll to the bottom (if the user has this feature turned on)
 * 
 * @param msg
 */
public void postConsole(String msg) {
	// Check to see if we've suspended messages
	if (FLAG_SUSPEND_OUT_STREAM.get() && !PreferenceManager.getDefaultSharedPreferences(this).getBoolean("pref_debug_global_verbose_output", false)) {
		return;
	}
	
	final TextView tv = findViewById(R.id.console);
	
	// Add the text
	tv.append(msg);
	
	final ScrollView scroll = findViewById(R.id.console_scroller);
	final HorizontalScrollView scrollX = findViewById(R.id.console_scroller_x);
	
	// Scroll to the bottom (if the user has this feature enabled)
	if(PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getBoolean("pref_scroll_lock", true))
		scroll.post(() -> {
			// Scroll to the bottom
			//scroll.fullScroll(ScrollView.FOCUS_DOWN);
			scroll.scrollTo(0, scroll.getHeight());
			
			scrollX.post(() -> {
				// Don't scroll horizontally at all...
				// TODO This doesn't really work
				scrollX.scrollTo(0, 0);
			});
	});
}
 

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

        final ScrollView scrollview = findViewById(R.id.chatScrollView);
        scrollview.post(() -> scrollview.fullScroll(ScrollView.FOCUS_DOWN));

        chatLayout = findViewById(R.id.chatLayout);

        ImageView sendBtn = findViewById(R.id.sendBtn);
        sendBtn.setOnClickListener(this::sendMessage);

        queryEditText = findViewById(R.id.queryEditText);
        queryEditText.setOnKeyListener((view, keyCode, event) -> {
            if (event.getAction() == KeyEvent.ACTION_DOWN) {
                switch (keyCode) {
                    case KeyEvent.KEYCODE_DPAD_CENTER:
                    case KeyEvent.KEYCODE_ENTER:
                        sendMessage(sendBtn);
                        return true;
                    default:
                        break;
                }
            }
            return false;
        });

        // Android client for older V1 --- recommend not to use this
//        initChatbot();

        // Java V2
        initV2Chatbot();
    }
 

private static void scrollToBottom(final ScrollView sv) {
    sv.post(new Runnable() {
        @Override
        public void run() {
            sv.fullScroll(View.FOCUS_DOWN);
        }
    });
}
 

/**
 * 滚动到页底部
 *
 * @param pageIndex 页索引
 */
public void scrollToPageBottom(int pageIndex) {
    final ScrollView scrollView = (ScrollView) container.getChildAt(pageIndex).findViewById(R.id.dvp_scroll_view);
    scrollView.post(new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(FOCUS_DOWN);
        }
    });
}
 

/**
 * Updates the state of the simulation controls and the values displayed.
 * Updates the enabled/disabled states of the simulation controls.
 * It also refreshes the values displayed in the tables and the datapath,
 * and scrolls the assembled code table to make the current instruction visible.
 */
private void refreshValues() {
	updateStepBackEnabled();
	updateStepEnabled();

	refreshRegistersTableValues();
	refreshDataMemoryTableValues();
	refreshAssembledCodeTableValues();
	refreshExecTableValues();
	if(datapath != null) datapath.refresh();

	// Scroll the assembled code table to the current instruction
	int index = getCPU().getPC().getCurrentInstructionIndex();
	if(index >= 0) {
		final ScrollView scroll = (ScrollView)findViewById(R.id.tblAssembledCodeScroll);
		final View row = tblAssembledCode.getChildAt(index + 1);

		// Scroll only if the row is out of view
		if(row != null && (row.getTop() < scroll.getScrollY() ||
		                   row.getBottom() > (scroll.getScrollY() + scroll.getHeight()))) {
			scroll.post(new Runnable() {
				@Override
				public void run() {
					if(row.getTop() < scroll.getScrollY()) {
						// Row is above the visible area
						// > scroll up until the row is visible at the top of the ScrollView
						scroll.smoothScrollTo(0, row.getTop());
					}
					else {
						// Row is below the visible area
						// > scroll down until the row is visible at the bottom of the ScrollView
						scroll.smoothScrollTo(0, row.getBottom() - scroll.getHeight());
					}
				}
			});
		}
	}
}
 

private void moveScroll() {
    View view = getView();
    if (view != null) {
        final ScrollView scroll = (ScrollView) view.findViewById(R.id.scroll);
        scroll.post(new Runnable() {
            @Override
            public void run() {
                scroll.fullScroll(ScrollView.FOCUS_DOWN);
            }
        });
    }
}
 

private void moveScroll() {
    View view = getView();
    if (view != null) {
        final ScrollView scroll = (ScrollView) view.findViewById(R.id.scroll);
        scroll.post(new Runnable() {
            @Override
            public void run() {
                scroll.fullScroll(ScrollView.FOCUS_DOWN);
            }
        });
    }
}
 

static void createListenerLog(LinearLayout messagesContainer, String text) {
    String currentDateTime = new SimpleDateFormat("HH:mm:ss.SSS", Locale.getDefault()).format(new Date());
    TextView textView = new TextView(messagesContainer.getContext());
    textView.setTextColor(Color.WHITE);
    textView.setTextSize(14);
    textView.setText(currentDateTime + ": " + text);

    messagesContainer.addView(textView);
    final ScrollView scrollView = (ScrollView)messagesContainer.getParent();
    scrollView.post(new Runnable() {
        public void run() {
            scrollView.fullScroll(ScrollView.FOCUS_DOWN);
        }
    });
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_activity2);
    setTitle("Second Activity");
    mTextView = (TextView) findViewById(R.id.textview);
    mScrollView = (ScrollView) findViewById(R.id.scrollview);
    mScrollView.post(new Runnable() {
        @Override
        public void run() {
            mScrollView.fullScroll(View.FOCUS_DOWN);
        }
    });
    mDrawTextView = (TextView) findViewById(R.id.drag_textview);
    mDrawImageView = (ImageView) findViewById(R.id.drag_imageview);
    mDrawTextView.setOnDragListener(new View.OnDragListener() {
        @Override
        public boolean onDrag(View view, DragEvent dragEvent) {
            switch (dragEvent.getAction()) {
                case DragEvent.ACTION_DRAG_STARTED:
                    log("ACTION_DRAG_STARTED");
                    break;
                case DragEvent.ACTION_DRAG_ENTERED:
                    log("ACTION_DRAG_ENTERED");
                    break;
                case DragEvent.ACTION_DRAG_EXITED:
                    log("ACTION_DRAG_EXITED");
                    break;
                case DragEvent.ACTION_DRAG_LOCATION:
                    log("ACTION_DRAG_LOCATION");
                    break;
                case DragEvent.ACTION_DRAG_ENDED:
                    log("ACTION_DRAG_ENDED");
                    break;
                case DragEvent.ACTION_DROP:
                    log("ACTION_DROP");
                    mDrawTextView.setVisibility(View.GONE);
                    mDrawImageView.setVisibility(View.VISIBLE);
                    ClipData clipData = dragEvent.getClipData();
                    mDrawImageView.setImageURI(clipData.getItemAt(1).getUri());
                    Toast.makeText(mActivity, clipData.getItemAt(0).getText(), Toast.LENGTH_LONG).show();
                    break;
                default:
                    break;
            }
            return true;
        }
    });
    print("onCreate", "#ff0000", false);
}
 

private synchronized void scrollToBottom(ScrollView scrollView) {
    scrollView.post(() -> scrollView.fullScroll(ScrollView.FOCUS_DOWN));
}