public void setupListener() {
final ViewTreeObserver viewTreeObserver = mView.getViewTreeObserver();
if (viewTreeObserver != null) {
viewTreeObserver.addOnGlobalLayoutListener(this);
viewTreeObserver.addOnGlobalFocusChangeListener(this);
viewTreeObserver.addOnPreDrawListener(this);
viewTreeObserver.addOnScrollChangedListener(this);
viewTreeObserver.addOnTouchModeChangeListener(this);
}
}
private void registerListener(View anchor) {
if (mSuperScrollListener != null) {
ViewTreeObserver vto =
(anchor.getWindowToken() != null) ? anchor.getViewTreeObserver() : null;
if (vto != mViewTreeObserver) {
if (mViewTreeObserver != null && mViewTreeObserver.isAlive()) {
mViewTreeObserver.removeOnScrollChangedListener(mSuperScrollListener);
}
if ((mViewTreeObserver = vto) != null) {
vto.addOnScrollChangedListener(mSuperScrollListener);
}
}
}
}
public void testAccessOnScrollChangedListener() throws Throwable {
layout(R.layout.scrollview_layout);
final ScrollView scrollView = (ScrollView) mActivity.findViewById(R.id.scroll_view);
mViewTreeObserver = scrollView.getViewTreeObserver();
final MockOnScrollChangedListener listener = new MockOnScrollChangedListener();
assertFalse(listener.hasCalledOnScrollChanged());
mViewTreeObserver.addOnScrollChangedListener(listener);
runTestOnUiThread(
new Runnable() {
@Override
public void run() {
scrollView.fullScroll(View.FOCUS_DOWN);
}
});
mInstrumentation.waitForIdleSync();
new PollingCheck() {
@Override
protected boolean check() {
return listener.hasCalledOnScrollChanged();
}
}.run();
listener.reset();
assertFalse(listener.hasCalledOnScrollChanged());
mViewTreeObserver.removeOnScrollChangedListener(listener);
runTestOnUiThread(
new Runnable() {
@Override
public void run() {
scrollView.fullScroll(View.FOCUS_UP);
}
});
assertFalse(listener.hasCalledOnScrollChanged());
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SdkData.turingApiManager.setRequestWatcher(new HHttpRequestWatcher(this));
findViewById(R.id.btn_send).setOnClickListener(this);
findViewById(R.id.image_voice).setOnClickListener(this);
((EditText) findViewById(R.id.type_blank)).addTextChangedListener(new HTextWatcher());
((RoundButton) findViewById(R.id.btn_voice))
.setOnTouchListener(
new RoundButton.OnTouchListener() {
@Override
public void onTouchDown() {
ASRModule.start(
new Runnable() {
@Override
public void run() {
sendMsg(ASRModule.output);
}
});
}
@Override
public void onTouchUp() {
ASRModule.stop();
}
});
ViewTreeObserver vto = findViewById(R.id.scroll_chatbox).getViewTreeObserver();
vto.addOnGlobalLayoutListener(
new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
View scrollView = MainActivity.this.findViewById(R.id.scroll_chatbox);
int height = scrollView.getHeight();
int scrollValue = lastScrollHeight - height;
if (scrollValue > 0
|| scrollView.getScrollY() + scrollView.getHeight()
!= MainActivity.this.findViewById(R.id.layout_chatbox).getHeight())
scrollView.scrollBy(0, scrollValue);
else
scrollView.scrollBy(
0,
-MainActivity.this.findViewById(R.id.layout_chatbox).getHeight()
+ scrollY
+ lastScrollHeight);
lastScrollHeight = height;
}
});
vto.addOnScrollChangedListener(
new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
View scrollView = MainActivity.this.findViewById(R.id.scroll_chatbox);
scrollY = scrollView.getScrollY();
}
});
findViewById(R.id.scroll_chatbox)
.setOnTouchListener(
new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
v.requestFocus();
return false;
}
});
findViewById(R.id.btn_voice)
.setOnFocusChangeListener(
new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus && !isBtmBarShowing) showBtmBar();
if (isBtmBarShowing && !hasFocus && !isSendingMsg) hideBtmBar();
}
});
ASRModule.init(this);
TTSModule.init(this);
}
package com.actionbarsherlock.internal.widget;
protected void zza(ViewTreeObserver viewtreeobserver) {
viewtreeobserver.addOnScrollChangedListener(this);
}