Android 高仿 频道管理----网易、今日头条、腾讯视频 （能够拖动的GridView）附源代码DEMO

/** GRIDVIEW相应的ITEM点击监听接口 */
@Override
public void onItemClick(AdapterView<?> parent, final View view, final int position,long id) {
//假设点击的时候。之前动画还没结束，那么就让点击事件无效
if(isMove){
return;
}
switch (parent.getId()) {
case R.id.userGridView:
//position为 0，1 的不能够进行不论什么操作
if (position != 0 && position != 1) {
final ImageView moveImageView = getView(view);
if (moveImageView != null) {
TextView newTextView = (TextView) view.findViewById(R.id.text_item);
final int[] startLocation = new int[2];
newTextView.getLocationInWindow(startLocation);
final ChannelItem channel = ((DragAdapter) parent.getAdapter()).getItem(position);//获取点击的频道内容
otherAdapter.setVisible(false);
//加入到最后一个
otherAdapter.addItem(channel);
new Handler().postDelayed(new Runnable() {
public void run() {
try {
int[] endLocation = new int[2];
//获取终点的坐标
otherGridView.getChildAt(otherGridView.getLastVisiblePosition()).getLocationInWindow(endLocation);
MoveAnim(moveImageView, startLocation , endLocation, channel,userGridView);
userAdapter.setRemove(position);
} catch (Exception localException) {
}
}
}, 50L);
}
}
break;
case R.id.otherGridView:
final ImageView moveImageView = getView(view);
if (moveImageView != null){
TextView newTextView = (TextView) view.findViewById(R.id.text_item);
final int[] startLocation = new int[2];
newTextView.getLocationInWindow(startLocation);
final ChannelItem channel = ((OtherAdapter) parent.getAdapter()).getItem(position);
userAdapter.setVisible(false);
//加入到最后一个
userAdapter.addItem(channel);
new Handler().postDelayed(new Runnable() {
public void run() {
try {
int[] endLocation = new int[2];
//获取终点的坐标
userGridView.getChildAt(userGridView.getLastVisiblePosition()).getLocationInWindow(endLocation);
MoveAnim(moveImageView, startLocation , endLocation, channel,otherGridView);
otherAdapter.setRemove(position);
} catch (Exception localException) {
}
}
}, 50L);
}
break;
default:
break;
}
}

移动动画：

private void MoveAnim(View moveView, int[] startLocation,int[] endLocation, final ChannelItem moveChannel,
final GridView clickGridView) {
int[] initLocation = new int[2];
//获取传递过来的VIEW的坐标
moveView.getLocationInWindow(initLocation);
//得到要移动的VIEW,并放入相应的容器中
final ViewGroup moveViewGroup = getMoveViewGroup();
final View mMoveView = getMoveView(moveViewGroup, moveView, initLocation);
//创建移动动画
TranslateAnimation moveAnimation = new TranslateAnimation(
startLocation[0], endLocation[0], startLocation[1],
endLocation[1]);
moveAnimation.setDuration(300L);//动画时间
//动画配置
AnimationSet moveAnimationSet = new AnimationSet(true);
moveAnimationSet.setFillAfter(false);//动画效果运行完成后，View对象不保留在终止的位置
moveAnimationSet.addAnimation(moveAnimation);
mMoveView.startAnimation(moveAnimationSet);
moveAnimationSet.setAnimationListener(new AnimationListener() {@Override
public void onAnimationStart(Animation animation) {
isMove = true;
}@Override
public void onAnimationRepeat(Animation animation) {
}@Override
public void onAnimationEnd(Animation animation) {
moveViewGroup.removeView(mMoveView);
// instanceof 方法推断2边实例是不是一样。推断点击的是DragGrid还是OtherGridView
if (clickGridView instanceof DragGrid) {
otherAdapter.setVisible(true);
otherAdapter.notifyDataSetChanged();
userAdapter.remove();
}else{
userAdapter.setVisible(true);
userAdapter.notifyDataSetChanged();
otherAdapter.remove();
}
isMove = false;
}
});
}

可拖拽的DragGrid代码：

public class DragGrid extends GridView {
/** 点击时候的X位置 */
public int downX;
/** 点击时候的Y位置 */
public int downY;
/** 点击时候相应整个界面的X位置 */
public int windowX;
/** 点击时候相应整个界面的Y位置 */
public int windowY;
/** 屏幕上的X */
private int win_view_x;
/** 屏幕上的Y */
private int win_view_y;
/** 拖动的里x的距离 */
int dragOffsetX;
/** 拖动的里Y的距离 */
int dragOffsetY;
/** 长按时候相应postion */
public int dragPosition;
/** Up后相应的ITEM的Position */
private int dropPosition;
/** 開始拖动的ITEM的Position */
private int startPosition;
/** item高 */
private int itemHeight;
/** item宽 */
private int itemWidth;
/** 拖动的时候相应ITEM的VIEW */
private View dragImageView = null;
/** 长按的时候ITEM的VIEW */
private ViewGroup dragItemView = null;
/** WindowManager管理器 */
private WindowManager windowManager = null;
/** */
private WindowManager.LayoutParams windowParams = null;
/** item总量 */
private int itemTotalCount;
/** 一行的ITEM数量 */
private int nColumns = 4;
/** 行数 */
private int nRows;
/** 剩余部分 */
private int Remainder;
/** 是否在移动 */
private boolean isMoving = false;
/** */
private int holdPosition;
/** 拖动的时候放大的倍数 */
private double dragScale = 1.2D;
/** 震动器 */
private Vibrator mVibrator;
/** 每一个ITEM之间的水平间距 */
private int mHorizontalSpacing = 15;
/** 每一个ITEM之间的竖直间距 */
private int mVerticalSpacing = 15;
/* 移动时候最后个动画的ID */
private String LastAnimationID;public DragGrid(Context context) {
super(context);
init(context);
}public DragGrid(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}public DragGrid(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}public void init(Context context) {
mVibrator = (Vibrator) context
.getSystemService(Context.VIBRATOR_SERVICE);
// 将布局文件里设置的间距dip转为px
mHorizontalSpacing = DataTools.dip2px(context, mHorizontalSpacing);
}@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
downX = (int) ev.getX();
downY = (int) ev.getY();
windowX = (int) ev.getX();
windowY = (int) ev.getY();
setOnItemClickListener(ev);
}
return super.onInterceptTouchEvent(ev);
}@Override
public boolean onTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
boolean bool = true;
if (dragImageView != null
&& dragPosition != AdapterView.INVALID_POSITION) {
// 移动时候的相应x,y位置
bool = super.onTouchEvent(ev);
int x = (int) ev.getX();
int y = (int) ev.getY();
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
downX = (int) ev.getX();
windowX = (int) ev.getX();
downY = (int) ev.getY();
windowY = (int) ev.getY();
break;
case MotionEvent.ACTION_MOVE:
onDrag(x, y, (int) ev.getRawX(), (int) ev.getRawY());
if (!isMoving) {
OnMove(x, y);
}
if (pointToPosition(x, y) != AdapterView.INVALID_POSITION) {
break;
}
break;
case MotionEvent.ACTION_UP:
stopDrag();
onDrop(x, y);
requestDisallowInterceptTouchEvent(false);
break;default:
break;
}
}
return super.onTouchEvent(ev);
}/** 在拖动的情况 */
private void onDrag(int x, int y, int rawx, int rawy) {
if (dragImageView != null) {
windowParams.alpha = 0.6f;
windowParams.x = rawx - win_view_x;
windowParams.y = rawy - win_view_y;
windowManager.updateViewLayout(dragImageView, windowParams);
}
}/** 在松手下放的情况 */
private void onDrop(int x, int y) {
// 依据拖动到的x,y坐标获取拖动位置下方的ITEM相应的POSTION
int tempPostion = pointToPosition(x, y);
dropPosition = tempPostion;
DragAdapter mDragAdapter = (DragAdapter) getAdapter();
// 显示刚拖动的ITEM
mDragAdapter.setShowDropItem(true);
// 刷新适配器，让相应的ITEM显示
mDragAdapter.notifyDataSetChanged();
}/**
* 长按点击监听
* @param ev
*/
public void setOnItemClickListener(final MotionEvent ev) {
setOnItemLongClickListener(new OnItemLongClickListener() {@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
int x = (int) ev.getX();// 长安事件的X位置
int y = (int) ev.getY();// 长安事件的y位置
startPosition = position;// 第一次点击的postion
dragPosition = position;
if (startPosition <= 1) {
return false;
}
ViewGroup dragViewGroup = (ViewGroup) getChildAt(dragPosition
- getFirstVisiblePosition());
TextView dragTextView = (TextView) dragViewGroup
.findViewById(R.id.text_item);
dragTextView.setSelected(true);
dragTextView.setEnabled(false);
itemHeight = dragViewGroup.getHeight();
itemWidth = dragViewGroup.getWidth();
itemTotalCount = DragGrid.this.getCount();
int row = itemTotalCount / nColumns;// 算出行数
Remainder = (itemTotalCount % nColumns);// 算出最后一行多余的数量
if (Remainder != 0) {
nRows = row + 1;
} else {
nRows = row;
}
// 假设特殊的这个不等于拖动的那个,而且不等于-1
if (dragPosition != AdapterView.INVALID_POSITION) {
// 释放的资源使用的画图缓存。假设你调用buildDrawingCache()手动没有调用setDrawingCacheEnabled(真正的),你应该清理缓存使用这样的方法。win_view_x = windowX - dragViewGroup.getLeft();// VIEW相对自己的X。半斤
win_view_y = windowY - dragViewGroup.getTop();// VIEW相对自己的y，半斤
dragOffsetX = (int) (ev.getRawX() - x);// 手指在屏幕的上X位置-手指在控件中的位置就是距离最左边的距离
dragOffsetY = (int) (ev.getRawY() - y);// 手指在屏幕的上y位置-手指在控件中的位置就是距离最上边的距离
dragItemView = dragViewGroup;
dragViewGroup.destroyDrawingCache();
dragViewGroup.setDrawingCacheEnabled(true);
Bitmap dragBitmap = Bitmap.createBitmap(dragViewGroup
.getDrawingCache());
mVibrator.vibrate(50);// 设置震动时间
startDrag(dragBitmap, (int) ev.getRawX(),
(int) ev.getRawY());
hideDropItem();
dragViewGroup.setVisibility(View.INVISIBLE);
isMoving = false;
requestDisallowInterceptTouchEvent(true);
return true;
}
return false;
}
});
}public void startDrag(Bitmap dragBitmap, int x, int y) {
stopDrag();
windowParams = new WindowManager.LayoutParams();// 获取WINDOW界面的
// Gravity.TOP|Gravity.LEFT;这个必须加
windowParams.gravity = Gravity.TOP | Gravity.LEFT;
// 得到preview左上角相对于屏幕的坐标
windowParams.x = x - win_view_x;
windowParams.y = y - win_view_y;
// 设置拖拽item的宽和高
windowParams.width = (int) (dragScale * dragBitmap.getWidth());// 放大dragScale倍，能够设置拖动后的倍数
windowParams.height = (int) (dragScale * dragBitmap.getHeight());// 放大dragScale倍，能够设置拖动后的倍数
this.windowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
this.windowParams.format = PixelFormat.TRANSLUCENT;
this.windowParams.windowAnimations = 0;
ImageView iv = new ImageView(getContext());
iv.setImageBitmap(dragBitmap);
windowManager = (WindowManager) getContext().getSystemService(
Context.WINDOW_SERVICE);// "window"
windowManager.addView(iv, windowParams);
dragImageView = iv;
}/** 停止拖动 。释放并初始化 */
private void stopDrag() {
if (dragImageView != null) {
windowManager.removeView(dragImageView);
dragImageView = null;
}
}/** 在ScrollView内。所以要进行计算高度 */
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}/** 隐藏 放下 的ITEM */
private void hideDropItem() {
((DragAdapter) getAdapter()).setShowDropItem(false);
}/** 获取移动动画 */
public Animation getMoveAnimation(float toXValue, float toYValue) {
TranslateAnimation mTranslateAnimation = new TranslateAnimation(
Animation.RELATIVE_TO_SELF, 0.0F, Animation.RELATIVE_TO_SELF,
toXValue, Animation.RELATIVE_TO_SELF, 0.0F,
Animation.RELATIVE_TO_SELF, toYValue);// 当前位置移动到指定位置
mTranslateAnimation.setFillAfter(true);// 设置一个动画效果运行完成后，View对象保留在终止的位置。mTranslateAnimation.setDuration(300L);
return mTranslateAnimation;
}/** 移动的时候触发 */
public void OnMove(int x, int y) {
// 拖动的VIEW下方的POSTION
int dPosition = pointToPosition(x, y);
// 推断下方的POSTION是否是最開始2个不能拖动的
if (dPosition > 1) {
if ((dPosition == -1) || (dPosition == dragPosition)) {
return;
}
dropPosition = dPosition;
if (dragPosition != startPosition) {
dragPosition = startPosition;
}
int movecount;
// 拖动的=開始拖的，而且 拖动的 不等于放下的
if ((dragPosition == startPosition)
|| (dragPosition != dropPosition)) {
// 移须要移动的动ITEM数量
movecount = dropPosition - dragPosition;
} else {
// 移须要移动的动ITEM数量为0
movecount = 0;
}
if (movecount == 0) {
return;
}int movecount_abs = Math.abs(movecount);if (dPosition != dragPosition) {
// dragGroup设置为不可见
ViewGroup dragGroup = (ViewGroup) getChildAt(dragPosition);
dragGroup.setVisibility(View.INVISIBLE);
float to_x = 1;// 当前下方positon
float to_y;// 当前下方右边positon
// x_vlaue移动的距离百分比（相对于自己长度的百分比）
float x_vlaue = ((float) mHorizontalSpacing / (float) itemWidth) + 1.0f;
// y_vlaue移动的距离百分比（相对于自己宽度的百分比）
float y_vlaue = ((float) mVerticalSpacing / (float) itemHeight) + 1.0f;
Log.d("x_vlaue", "x_vlaue = " + x_vlaue);
for (int i = 0; i < movecount_abs; i++) {
to_x = x_vlaue;
to_y = y_vlaue;
// 像左
if (movecount > 0) {
// 推断是不是同一行的
holdPosition = dragPosition + i + 1;
if (dragPosition / nColumns == holdPosition / nColumns) {
to_x = -x_vlaue;
to_y = 0;
} else if (holdPosition % 4 == 0) {
to_x = 3 * x_vlaue;
to_y = -y_vlaue;
} else {
to_x = -x_vlaue;
to_y = 0;
}
} else {
// 向右,下移到上，右移到左
holdPosition = dragPosition - i - 1;
if (dragPosition / nColumns == holdPosition / nColumns) {
to_x = x_vlaue;
to_y = 0;
} else if ((holdPosition + 1) % 4 == 0) {
to_x = -3 * x_vlaue;
to_y = y_vlaue;
} else {
to_x = x_vlaue;
to_y = 0;
}
}
ViewGroup moveViewGroup = (ViewGroup) getChildAt(holdPosition);
Animation moveAnimation = getMoveAnimation(to_x, to_y);
moveViewGroup.startAnimation(moveAnimation);
// 假设是最后一个移动的，那么设置他的最后个动画ID为LastAnimationID
if (holdPosition == dropPosition) {
LastAnimationID = moveAnimation.toString();
}
moveAnimation.setAnimationListener(new AnimationListener() {@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
isMoving = true;
}@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub}@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
// 假设为最后个动画结束，那运行以下的方法
if (animation.toString().equalsIgnoreCase(
LastAnimationID)) {
DragAdapter mDragAdapter = (DragAdapter) getAdapter();
mDragAdapter.exchange(startPosition,
dropPosition);
startPosition = dropPosition;
dragPosition = dropPosition;
isMoving = false;
}
}
});
}
}
}
}
}

数据库SQLHelper文件

public class SQLHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "database.db";// 数据库名称
public static final int VERSION = 1;public static final String TABLE_CHANNEL = "channel";//数据表 public static final String ID = "id";//
public static final String NAME = "name";
public static final String ORDERID = "orderId";
public static final String SELECTED = "selected";
private Context context;
public SQLHelper(Context context) {
super(context, DB_NAME, null, VERSION);
this.context = context;
}public Context getContext(){
return context;
}@Override
public void onCreate(SQLiteDatabase db) {
// TODO 创建数据库后，对数据库的操作
String sql = "create table if not exists "+TABLE_CHANNEL +
"(_id INTEGER PRIMARY KEY AUTOINCREMENT, " +
ID + " INTEGER , " +
NAME + " TEXT , " +
ORDERID + " INTEGER , " +
SELECTED + " SELECTED)";
db.execSQL(sql);
}@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO 更改数据库版本号的操作
onCreate(db);
}}

注：本DEMO中，增加了长按震动。所以在权限里面记得加上“

<!-- 在SDCard中创建与删除文件权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<!-- 往SDCard写入数据权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- 震动权限 -->
<uses-permission android:name="android.permission.VIBRATE"/>