Android仿QQ左滑置顶删除功能 Android仿QQ首页ListView左滑置顶、删除功能
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Android 仿QQ首页ListView左滑置顶、删除等实现源码,具体内容如下
效果图
实现源码:package com.duguang.baseanimation.ui.listivew.deletelistview;
import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.util.TypedValue; import android.view.MotionEvent; import android.view.View; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.Scroller; import android.widget.TextView; import com.kayak.deletelistview.R; public class SlideView extends LinearLayout { private static final String TAG = "SlideView"; private Context mContext; private LinearLayout mViewContent; private RelativeLayout mHolder; private Scroller mScroller; private OnSlideListener mOnSlideListener; private int mHolderWidth = 120; private int mLastX = 0; private int mLastY = 0; private static final int TAN = 2; public interface OnSlideListener { public static final int SLIDE_STATUS_OFF = 0; public static final int SLIDE_STATUS_START_SCROLL = 1; public static final int SLIDE_STATUS_ON = 2; /** * @param view current SlideView * @param status SLIDE_STATUS_ON or SLIDE_STATUS_OFF */ public void onSlide(View view, int status); } public SlideView(Context context) { super(context); initView(); } public SlideView(Context context, AttributeSet attrs) { super(context, attrs); initView(); } private void initView() { mContext = getContext(); mScroller = new Scroller(mContext); setOrientation(LinearLayout.HORIZONTAL); View.inflate(mContext, R.layout.activity_listview_delete_slide_view_merge, this); mViewContent = (LinearLayout) findViewById(R.id.view_content); mHolderWidth = Math.round(TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DIP, mHolderWidth, getResources() .getDisplayMetrics())); } public void setButtonText(CharSequence text) { ((TextView)findViewById(R.id.delete)).setText(text); } public void setContentView(View view) { mViewContent.addView(view); } public void setOnSlideListener(OnSlideListener onSlideListener) { mOnSlideListener = onSlideListener; } public void shrink() { if (getScrollX() != 0) { this.smoothScrollTo(0, 0); } } public void onRequireTouchEvent(MotionEvent event) { int x = (int) event.getX(); int y = (int) event.getY(); int scrollX = getScrollX(); Log.d(TAG, "x=" + x + " y=" + y); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: { if (!mScroller.isFinished()) { mScroller.abortAnimation(); } if (mOnSlideListener != null) { mOnSlideListener.onSlide(this, OnSlideListener.SLIDE_STATUS_START_SCROLL); } break; } case MotionEvent.ACTION_MOVE: { int deltaX = x - mLastX; int deltaY = y - mLastY; if (Math.abs(deltaX) < Math.abs(deltaY) * TAN) { break; } int newScrollX = scrollX - deltaX; if (deltaX != 0) { if (newScrollX < 0) { newScrollX = 0; } else if (newScrollX > mHolderWidth) { newScrollX = mHolderWidth; } this.scrollTo(newScrollX, 0); } break; } case MotionEvent.ACTION_UP: { int newScrollX = 0; if (scrollX - mHolderWidth * 0.75 > 0) { newScrollX = mHolderWidth; } this.smoothScrollTo(newScrollX, 0); if (mOnSlideListener != null) { mOnSlideListener.onSlide(this, newScrollX == 0 ? OnSlideListener.SLIDE_STATUS_OFF : OnSlideListener.SLIDE_STATUS_ON); } break; } default: break; } mLastX = x; mLastY = y; } private void smoothScrollTo(int destX, int destY) { // 缓慢滚动到指定位置 int scrollX = getScrollX(); int delta = destX - scrollX; mScroller.startScroll(scrollX, 0, delta, 0, Math.abs(delta) * 3); invalidate(); } @Override public void computeScroll() { if (mScroller.computeScrollOffset()) { scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); postInvalidate(); } } }
package com.duguang.baseanimation.ui.listivew.deletelistview; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.widget.ListView; import com.duguang.baseanimation.ui.listivew.deletelistview.DeleteListViewMainActivity.MessageItem; public class ListViewCompat extends ListView { private static final String TAG = "ListViewCompat"; private SlideView mFocusedItemView; public ListViewCompat(Context context) { super(context); } public ListViewCompat(Context context, AttributeSet attrs) { super(context, attrs); } public ListViewCompat(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public void shrinkListItem(int position) { View item = getChildAt(position); if (item != null) { try { ((SlideView) item).shrink(); } catch (ClassCastException e) { e.printStackTrace(); } } } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: { int x = (int) event.getX(); int y = (int) event.getY(); int position = pointToPosition(x, y); Log.e(TAG, "postion=" + position); if (position != INVALID_POSITION) { MessageItem data = (MessageItem) getItemAtPosition(position); mFocusedItemView = data.slideView; Log.e(TAG, "FocusedItemView=" + mFocusedItemView); } } default: break; } if (mFocusedItemView != null) { mFocusedItemView.onRequireTouchEvent(event); } return super.onTouchEvent(event); } }
package com.duguang.baseanimation.ui.listivew.deletelistview; import java.util.ArrayList; import java.util.List; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.duguang.baseanimation.ui.base.BaseActivity; import com.duguang.baseanimation.ui.listivew.deletelistview.SlideView.OnSlideListener; import com.kayak.deletelistview.R; public class DeleteListViewMainActivity extends BaseActivity implements OnItemClickListener, OnClickListener, OnSlideListener { private static final String TAG = "MainActivity"; private ListViewCompat mListView; private List<MessageItem> mMessageItems = new ArrayList<DeleteListViewMainActivity.MessageItem>(); private SlideView mLastSlideViewWithStatusOn; private SlideAdapter adapter; @Override public void setView() { setContentView(R.layout.activity_listview_delete_main); } @Override public void initView() { mListView = (ListViewCompat) findViewById(R.id.list); for (int i = 0; i < 20; i++) { MessageItem item = new MessageItem(); if (i % 3 == 0) { item.iconRes = R.drawable.delete_default_qq_avatar; item.title = "腾讯新闻"; item.msg = "青岛爆炸满月:大量鱼虾死亡"; item.time = "晚上18:18"; } else { item.iconRes = R.drawable.delete_wechat_icon; item.title = "微信团队"; item.msg = "欢迎你使用微信"; item.time = "12月18日"; } mMessageItems.add(item); } adapter = new SlideAdapter(); mListView.setAdapter(adapter); mListView.setOnItemClickListener(this); } @Override public void setListener() { // TODO Auto-generated method stub } private class SlideAdapter extends BaseAdapter { private LayoutInflater mInflater; SlideAdapter() { super(); mInflater = getLayoutInflater(); } @Override public int getCount() { return mMessageItems.size(); } @Override public Object getItem(int position) { return mMessageItems.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder holder; SlideView slideView = (SlideView) convertView; if (slideView == null) { View itemView = mInflater.inflate(R.layout.item_listview_delete, null); slideView = new SlideView(DeleteListViewMainActivity.this); slideView.setContentView(itemView); holder = new ViewHolder(slideView); slideView.setOnSlideListener(DeleteListViewMainActivity.this); slideView.setTag(holder); } else { holder = (ViewHolder) slideView.getTag(); } MessageItem item = mMessageItems.get(position); item.slideView = slideView; item.slideView.shrink(); holder.icon.setImageResource(item.iconRes); holder.title.setText(item.title); holder.msg.setText(item.msg); holder.time.setText(item.time); holder.deleteHolder.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { mMessageItems.remove(position); adapter.notifyDataSetChanged(); Toast.makeText(DeleteListViewMainActivity.this, "删除第" + position+"个条目", 0).show(); } }); return slideView; } } public class MessageItem { public int iconRes; public String title; public String msg; public String time; public SlideView slideView; } private static class ViewHolder { public ImageView icon; public TextView title; public TextView msg; public TextView time; public ViewGroup deleteHolder; ViewHolder(View view) { icon = (ImageView) view.findViewById(R.id.icon); title = (TextView) view.findViewById(R.id.title); msg = (TextView) view.findViewById(R.id.msg); time = (TextView) view.findViewById(R.id.time); deleteHolder = (ViewGroup)view.findViewById(R.id.holder); } } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(this, "onItemClick position=" + position, 0).show(); } @Override public void onSlide(View view, int status) { if (mLastSlideViewWithStatusOn != null && mLastSlideViewWithStatusOn != view) { mLastSlideViewWithStatusOn.shrink(); } if (status == SLIDE_STATUS_ON) { mLastSlideViewWithStatusOn = (SlideView) view; } } @Override public void onClick(View v) { switch (v.getId()) { case R.id.holder: break; default: break; } } }
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