Java Code Examples for android.view.ViewGroup#setDrawingCacheEnabled()
The following examples show how to use
android.view.ViewGroup#setDrawingCacheEnabled() .
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Example 1
| Source File: DragListView.java From DongWeather with Apache License 2.0 | 5 votes |
|
/**
* 获取触点所在条目的位置
* 获取选中条目的图片
* 事件的拦截机制
*
* @param ev
* @return
*/
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
//识别动作
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
//获取触点的坐标
int x = (int) ev.getX();
int y = (int) ev.getY();
//这样就可以计算我按到哪个条目上了
mStartPosition = mEndPosition = pointToPosition(x, y);
//判断触点是否在logo的区域
ViewGroup itemView = (ViewGroup) getChildAt(mStartPosition - getFirstVisiblePosition());
//记录手指在条目中的相对Y坐标
dragPoint = y - itemView.getTop();
//ListView在屏幕中的Y坐标
dragOffset = (int) (ev.getRawY() - y);
//拖动的图标
View dragger = itemView.findViewById(R.id.guide_shape_im); //有修改
//判断触点是否在logo区域
if (dragger != null && x < dragger.getRight() + 10) {
//定义ListView的滚动条目
//上
upScroll = getHeight() / 3;
//下
downScroll = getHeight() * 2 / 3;
//获取选中的图片/截图
itemView.setDrawingCacheEnabled(true);
//获取截图
Bitmap bitMap = itemView.getDrawingCache();
//图片滚动
startDrag(bitMap, y);
}
break;
}
//还会传递事件到子View
return false;
}
Example 2
| Source File: AllAngleExpandableButton.java From AllAngleExpandableButton with Apache License 2.0 | 5 votes |
|
private boolean showBlur() {
if (!blurBackground) {
return false;
}
//set invisible to avoid be blurred that resulting in show the blurred button edge when expanded,
//must be called before do blur
setVisibility(INVISIBLE);
final ViewGroup root = (ViewGroup) getRootView();
root.setDrawingCacheEnabled(true);
Bitmap bitmap = root.getDrawingCache();
checkBlurRadius();
blur.setParams(new Blur.Callback() {
@Override
public void onBlurred(Bitmap blurredBitmap) {
blurImageView.setImageBitmap(blurredBitmap);
root.setDrawingCacheEnabled(false);
root.addView(blurImageView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
blurAnimator = ObjectAnimator.ofFloat(blurImageView, "alpha", 0.0f, 1.0f).setDuration(expandAnimDuration);
if (blurListener != null) {
blurAnimator.removeListener(blurListener);
}
blurAnimator.start();
root.addView(maskView);
maskAttached = true;
maskView.reset();
maskView.initButtonRect();
maskView.onClickMainButton();
}
}, getContext(), bitmap, blurRadius);
blur.execute();
return true;
}
Example 3
| Source File: FoldableLayout.java From FoldableLayout with Apache License 2.0 | 5 votes |
|
private Bitmap computeBitmap(ViewGroup viewGroup) {
Bitmap bitmap;
Rect rect = new Rect();
viewGroup.getWindowVisibleDisplayFrame(rect);
viewGroup.destroyDrawingCache();
viewGroup.setDrawingCacheEnabled(true);
viewGroup.buildDrawingCache(true);
bitmap = viewGroup.getDrawingCache(true);
/**
* After rotation, the DecorView has no height and no width. Therefore
* .getDrawingCache() return null. That's why we have to force measure and layout.
*/
if (bitmap == null) {
viewGroup.measure(
MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.EXACTLY),
MeasureSpec.makeMeasureSpec(mCoverHeight * 2, MeasureSpec.EXACTLY)
);
viewGroup.layout(0, 0, viewGroup.getMeasuredWidth(),
viewGroup.getMeasuredHeight());
viewGroup.destroyDrawingCache();
viewGroup.setDrawingCacheEnabled(true);
viewGroup.buildDrawingCache(true);
bitmap = viewGroup.getDrawingCache(true);
}
if (bitmap == null) {
return Bitmap.createBitmap(2, 2, Bitmap.Config.ARGB_8888);
} else {
return bitmap.copy(Bitmap.Config.ARGB_8888, false);
}
}
Example 4
| Source File: DragnDropListView.java From CSipSimple with GNU General Public License v3.0 | 4 votes |
|
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if ((mDragListener != null || mDropListener != null)
&& ev.getAction() == MotionEvent.ACTION_DOWN) {
int x = (int) ev.getX();
int y = (int) ev.getY();
int itemnum = pointToPosition(x, y);
if (itemnum != AdapterView.INVALID_POSITION) {
ViewGroup item = (ViewGroup) getChildAt(itemnum - getFirstVisiblePosition());
Log.d("DnD view", "Start dragging at " + (itemnum - getFirstVisiblePosition()) + " for "+ itemnum + " # "+ getFirstVisiblePosition());
mDragPoint = y - item.getTop();
mCoordOffset = ((int) ev.getRawY()) - y;
View dragger = item.findViewById(grabberId);
if(dragger == null || dragger.getVisibility() == View.GONE) {
return super.onInterceptTouchEvent(ev);
}
Rect r = mTempRect;
r.left=dragger.getLeft();
r.right=dragger.getRight();
r.top=dragger.getTop();
r.bottom=dragger.getBottom();
if ((r.left<x) && (x<r.right)) {
item.setDrawingCacheEnabled(true);
// Create a copy of the drawing cache so that it does
// not get recycled
// by the framework when the list tries to clean up
// memory
Bitmap bitmap = Bitmap.createBitmap(item.getDrawingCache());
startDragging(bitmap, y);
mDragPos = itemnum;
mFirstDragPos = mDragPos;
mHeight = getHeight();
int touchSlop = mTouchSlop;
mUpperBound = Math.min(y - touchSlop, mHeight / 3);
mLowerBound = Math.max(y + touchSlop, mHeight * 2 / 3);
item.setDrawingCacheEnabled(false);
return false;
}
mDragView = null;
}
}
return super.onInterceptTouchEvent(ev);
}
Example 5
| Source File: TouchInterceptor.java From GravityBox with Apache License 2.0 | 4 votes |
|
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (mDragListener != null || mDropListener != null) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
int x = (int) ev.getX();
int y = (int) ev.getY();
int itemnum = pointToPosition(x, y);
if (itemnum == AdapterView.INVALID_POSITION) {
break;
}
ViewGroup item = (ViewGroup) getChildAt(itemnum - getFirstVisiblePosition());
mDragPoint = y - item.getTop();
mCoordOffset = ((int) ev.getRawY()) - y;
View dragger = item.findViewById(R.id.grabber);
Rect r = mTempRect;
dragger.getDrawingRect(r);
if (shouldStartDragging(x, r.width())) {
// Fix x position while dragging
int[] itemPos = new int[2];
item.getLocationOnScreen(itemPos);
item.setDrawingCacheEnabled(true);
// Create a copy of the drawing cache so that it does
// not get recycled
// by the framework when the list tries to clean up
// memory
Bitmap bitmap = Bitmap.createBitmap(item.getDrawingCache());
startDragging(bitmap, itemPos[0], y);
mDragPos = itemnum;
mFirstDragPos = mDragPos;
mHeight = getHeight();
int touchSlop = mTouchSlop;
mUpperBound = Math.min(y - touchSlop, mHeight / 3);
mLowerBound = Math.max(y + touchSlop, mHeight * 2 / 3);
return false;
}
stopDragging();
break;
}
}
return super.onInterceptTouchEvent(ev);
}
