package com.mylist;
import com.mylist.ListViewInterceptor.DropListener;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
public class ListViewInterceptor extends ListView {
private DropListener mDropListener;
private ImageView mDragView;
private int mDragPos; // which item is being dragged
private int mFirstDragPos; // where was the dragged item originally
private int mDragPoint; // at what offset inside the item did the user grab
// it
private int mCoordOffset; // the difference between screen coordinates and
// coordinates in this view
private Rect mTempRect = new Rect();
private final int mTouchSlop;
private int mHeight;
private int mUpperBound;
private int mLowerBound;
private WindowManager mWindowManager;
private WindowManager.LayoutParams mWindowParams;
private int dragndropBackgroundColor = 0x00000000;
private Bitmap mDragBitmap;
private int mItemHeightHalf = 32;
private int mItemHeightNormal = 64;
private int mItemHeightExpanded = 128;
public ListViewInterceptor(Context context, AttributeSet attrs) {
this(context, attrs, 0);
// TODO Auto-generated constructor stub
}
public ListViewInterceptor(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
Log.v(">>>>>>>>>>onTouchEvent", ">>>>>>>>>>onTouchEvent");
if ((mDropListener != null) && mDragView != null) {
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
Rect r = mTempRect;
mDragView.getDrawingRect(r);
stopDragging();
if (mDropListener != null && mDragPos >= 0
&& mDragPos < getCount()) {
mDropListener.drop(mFirstDragPos, mDragPos);
}
unExpandViews(false);
break;
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
int x = (int) ev.getX();
int y = (int) ev.getY();
dragView(x, y);
int itemnum = getItemForPosition(y);
if (itemnum >= 0) {
if (action == MotionEvent.ACTION_DOWN
|| itemnum != mDragPos) {
mDragPos = itemnum;
doExpansion();
Log.v(">>>doExpansion", ">>>>>>>>>>doExpansion");
}
// int speed = 0;
// adjustScrollBounds(y);
// if (y > mLowerBound) {
// // scroll the list up a bit
// speed = y > (mHeight + mLowerBound) / 2 ? 16 : 4;
// } else if (y < mUpperBound) {
// // scroll the list down a bit
// speed = y < mUpperBound / 2 ? -16 : -4;
// }
// if (speed != 0) {
// int ref = pointToPosition(0, mHeight / 2);
// if (ref == AdapterView.INVALID_POSITION) {
// // we hit a divider or an invisible view, check
// // somewhere else
// ref = pointToPosition(0, mHeight / 2
// + getDividerHeight() + 64);
// }
// View v = getChildAt(ref - getFirstVisiblePosition());
// if (v != null) {
// int pos = v.getTop();
// setSelectionFromTop(ref, pos - speed);
//
// }
// }
}
break;
}
return true;
}
return super.onTouchEvent(ev);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
if (mDropListener != null) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
int x = (int) ev.getX();
int y = (int) ev.getY();
int itemnum = pointToPosition(x, y);
Log.v("itemnum>>>", ">>>>>>>>" + itemnum);
if (itemnum == AdapterView.INVALID_POSITION) {
break;
}
ViewGroup item = (ViewGroup) getChildAt(itemnum
- getFirstVisiblePosition());
Log.v("itemnum>>>", ">>>>>>>>" + getFirstVisiblePosition()
+ "---" + ev.getRawY() + "----" + ev.getY()+"-----"+item.getTop());
mDragPoint = y - item.getTop();
mCoordOffset = ((int) ev.getRawY()) - y;
View dragger = item.findViewById(R.id.img);
Rect r = mTempRect;
// dragger.getDrawingRect(r);
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);
return false;
}
mDragView = null;
break;
}
}
return super.onInterceptTouchEvent(ev);
}
private void startDragging(Bitmap bm, int y) {
stopDragging();
mWindowParams = new WindowManager.LayoutParams();
mWindowParams.gravity = Gravity.TOP;
mWindowParams.x = 0;
mWindowParams.y = y - mDragPoint + mCoordOffset;
mWindowParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
mWindowParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
mWindowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
mWindowParams.format = PixelFormat.TRANSLUCENT;
mWindowParams.windowAnimations = 0;
ImageView v = new ImageView(getContext());
// int backGroundColor =
// getContext().getResources().getColor(R.color.dragndrop_background);
v.setBackgroundColor(dragndropBackgroundColor);
v.setImageBitmap(bm);
mDragBitmap = bm;
mWindowManager = (WindowManager) getContext()
.getSystemService("window");
mWindowManager.addView(v, mWindowParams);
mDragView = v;
}
private void stopDragging() {
if (mDragView != null) {
WindowManager wm = (WindowManager) getContext().getSystemService(
"window");
wm.removeView(mDragView);
mDragView.setImageDrawable(null);
mDragView = null;
}
if (mDragBitmap != null) {
mDragBitmap.recycle();
mDragBitmap = null;
}
}
private void dragView(int x, int y) {
float alpha = 1.0f;
mWindowParams.alpha = alpha;
// }
mWindowParams.y = y - mDragPoint + mCoordOffset;
mWindowManager.updateViewLayout(mDragView, mWindowParams);
}
private int getItemForPosition(int y) {
int adjustedy = y - mDragPoint - mItemHeightHalf;
int pos = myPointToPosition(0, adjustedy);
if (pos >= 0) {
if (pos <= mFirstDragPos) {
pos += 1;
}
} else if (adjustedy < 0) {
pos = 0;
}
return pos;
}
private void adjustScrollBounds(int y) {
if (y >= mHeight / 3) {
mUpperBound = mHeight / 3;
}
if (y <= mHeight * 2 / 3) {
mLowerBound = mHeight * 2 / 3;
}
}
/*
* Restore size and visibility for all listitems
*/
private void unExpandViews(boolean deletion) {
for (int i = 0;; i++) {
View v = getChildAt(i);
if (v == null) {
if (deletion) {
// HACK force update of mItemCount
int position = getFirstVisiblePosition();
int y = getChildAt(0).getTop();
setAdapter(getAdapter());
setSelectionFromTop(position, y);
// end hack
}
layoutChildren(); // force children to be recreated where needed
v = getChildAt(i);
if (v == null) {
break;
}
}
ViewGroup.LayoutParams params = v.getLayoutParams();
params.height = mItemHeightNormal;
v.setLay
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ListView 中的item随意拖动.zip (94个子文件)
ListView 中的item随意拖动
listviewdrop1.1
listviewdrop1.1
.classpath 280B
assets
.svn
prop-base
text-base
props
tmp
prop-base
text-base
props
entries 234B
all-wcprops 87B
src
.svn
prop-base
text-base
props
tmp
prop-base
text-base
props
entries 241B
all-wcprops 84B
com
.svn
prop-base
text-base
props
tmp
prop-base
text-base
props
entries 248B
all-wcprops 88B
mylist
ListViewInterceptor.java 10KB
.svn
prop-base
text-base
MainActivity.java.svn-base 3KB
ListViewInterceptor.java.svn-base 10KB
props
tmp
prop-base
text-base
props
entries 588B
all-wcprops 371B
MainActivity.java 3KB
res
drawable-mdpi
.svn
prop-base
icon.png.svn-base 53B
text-base
icon.png.svn-base 3KB
props
tmp
prop-base
text-base
props
entries 414B
all-wcprops 214B
icon.png 3KB
drawable-ldpi
.svn
prop-base
icon.png.svn-base 53B
text-base
icon.png.svn-base 2KB
props
tmp
prop-base
text-base
props
entries 414B
all-wcprops 214B
icon.png 2KB
.svn
prop-base
text-base
props
tmp
prop-base
text-base
props
entries 317B
all-wcprops 84B
values
.svn
prop-base
text-base
strings.xml.svn-base 176B
props
tmp
prop-base
text-base
props
entries 400B
all-wcprops 206B
strings.xml 176B
layout
main.xml 462B
.svn
prop-base
text-base
main.xml.svn-base 462B
mylistview.xml.svn-base 1KB
mylist.xml.svn-base 1KB
props
tmp
prop-base
text-base
props
entries 725B
all-wcprops 434B
mylistview.xml 1KB
mylist.xml 1KB
drawable
drawable-hdpi
xue.png 15KB
grabber.png 1KB
ai.png 19KB
shi.png 16KB
fan.png 12KB
.svn
prop-base
icon.png.svn-base 53B
xue.png.svn-base 53B
shi.png.svn-base 53B
tie.png.svn-base 53B
ai.png.svn-base 53B
grabber.png.svn-base 79B
fan.png.svn-base 53B
bei.png.svn-base 53B
text-base
icon.png.svn-base 4KB
xue.png.svn-base 15KB
shi.png.svn-base 16KB
tie.png.svn-base 19KB
ai.png.svn-base 19KB
grabber.png.svn-base 1KB
fan.png.svn-base 12KB
bei.png.svn-base 24KB
props
tmp
prop-base
text-base
props
entries 2KB
all-wcprops 1018B
tie.png 19KB
icon.png 4KB
bei.png 24KB
bin
resources.ap_ 119KB
MainActivity.apk 128KB
.svn
props
tmp
props
entries 241B
all-wcprops 84B
classes.dex 12KB
com
.svn
props
tmp
props
entries 248B
all-wcprops 88B
mylist
MainActivity$1.class 1KB
R$string.class 403B
R$layout.class 434B
ListViewInterceptor.class 8KB
R$id.class 499B
ListViewInterceptor$DropListener.class 248B
R$attr.class 316B
.svn
text-base
MainActivity.java.svn-base 3KB
ListViewInterceptor.java.svn-base 10KB
props
tmp
props
entries 588B
all-wcprops 371B
R$drawable.class 568B
MainActivity.class 3KB
R.class 475B
MainActivity$MyAdapter.class 2KB
.svn
prop-base
text-base
AndroidManifest.xml.svn-base 635B
default.properties.svn-base 364B
props
tmp
prop-base
text-base
props
entries 599B
all-wcprops 318B
default.properties 449B
.project 848B
AndroidManifest.xml 635B
gen
com
mylist
R.java 1KB
listviewdrop1.1.rar 524KB
共 94 条
- 1
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