Back to project page PlayTunes.
The source code is released under:
Copyright (c) 2014, Impeccable Labs, LLC. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ar...
If you think the Android project PlayTunes listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
/* * Copyright (C) 2010 Eric Harlow//w w w . j a va 2 s.c om * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.ideabag.playtunes.DragNDrop; import com.ideabag.playtunes.R; import android.annotation.SuppressLint; import android.content.Context; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.PixelFormat; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.WindowManager; import android.widget.AbsListView; import android.widget.ImageView; import android.widget.ListView; public class DragNDropListView extends ListView { // Used to toggle whether the list items can be dragged or not boolean mDraggingEnabled = false; boolean mDragMode; int mStartPosition; int mEndPosition; int mDragPointOffset; //Used to adjust drag view location int mDragHandleWidth; ImageView mDragView; //View mDragShadow; //GestureDetector mGestureDetector; DropListener mDropListener; RemoveListener mRemoveListener; DragListener mDragListener; public DragNDropListView(Context context, AttributeSet attrs) { super(context, attrs); Resources r = context.getResources(); mDragHandleWidth = r.getDimensionPixelSize( R.dimen.drag_handle_width ); //setOnScrollListener( mScrollListener ); } public void setDropListener(DropListener l) { mDropListener = l; } public void setRemoveListener(RemoveListener l) { mRemoveListener = l; } public void setDragListener(DragListener l) { mDragListener = l; } public void setDraggingEnabled( boolean enabled ) { mDraggingEnabled = enabled; } @Override public boolean onTouchEvent(MotionEvent ev) { final int action = ev.getAction(); final int x = (int) ev.getX(); final int y = (int) ev.getY(); if ( !mDraggingEnabled ) { return super.onTouchEvent( ev ); } if ( action == MotionEvent.ACTION_DOWN && x >= ( this.getWidth() - mDragHandleWidth ) ) { mDragMode = true; } if ( !mDragMode ) return super.onTouchEvent( ev ); switch (action) { case MotionEvent.ACTION_DOWN: mStartPosition = pointToPosition(x,y); if (mStartPosition != INVALID_POSITION) { int mItemPosition = mStartPosition - getFirstVisiblePosition(); mDragPointOffset = y - getChildAt(mItemPosition).getTop(); mDragPointOffset -= ((int)ev.getRawY()) - y; startDrag(mItemPosition,y); drag( 0,y);// replace 0 with x if desired } break; case MotionEvent.ACTION_MOVE: drag(0,y);// replace 0 with x if desired break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: default: mDragMode = false; mEndPosition = pointToPosition(x,y); // Where is the pointToPosition when dragged above? if ( mEndPosition == INVALID_POSITION && mStartPosition != INVALID_POSITION ) { if ( getFirstVisiblePosition() == 0 ) { // Above the first mEndPosition = 0; } else { // Below the last mEndPosition = getLastVisiblePosition(); } //android.util.Log.i( "DragNDropListView", "First visible: " + getFirstVisiblePosition() ); } android.util.Log.i( "DragNDropListView", "Dropped: " + mEndPosition ); stopDrag(mStartPosition - getFirstVisiblePosition()); if (mDropListener != null && mStartPosition != INVALID_POSITION && mEndPosition != INVALID_POSITION) mDropListener.onDrop(mStartPosition, mEndPosition); break; } return true; } // move the drag view private void drag(int x, int y) { if (mDragView != null) { WindowManager.LayoutParams layoutParams = (WindowManager.LayoutParams) mDragView.getLayoutParams(); layoutParams.x = x; layoutParams.y = y - mDragPointOffset; WindowManager mWindowManager = (WindowManager) getContext() .getSystemService(Context.WINDOW_SERVICE); mWindowManager.updateViewLayout(mDragView, layoutParams); if (mDragListener != null) mDragListener.onDrag( x, y, this );// change null to "this" when ready to use } } // enable the drag view for dragging @SuppressLint("NewApi") private void startDrag(int itemIndex, int y) { stopDrag(itemIndex); View item = getChildAt(itemIndex); if (item == null) return; item.setDrawingCacheEnabled(true); if (mDragListener != null) mDragListener.onStartDrag( itemIndex, item); // 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()); item.setDrawingCacheEnabled(false); WindowManager.LayoutParams mWindowParams = new WindowManager.LayoutParams(); mWindowParams.gravity = Gravity.TOP; mWindowParams.x = 0; mWindowParams.y = y - mDragPointOffset; 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 | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS; //mWindowParams.format = PixelFormat.OPAQUE; mWindowParams.format = PixelFormat.TRANSLUCENT; mWindowParams.windowAnimations = 0; Context context = getContext(); ImageView v = new ImageView(context); v.setImageBitmap(bitmap); v.setBackgroundResource( R.drawable.drag_shadow ); if ( android.os.Build.VERSION.SDK_INT >= 11 ) { v.setAlpha( 0.8f ); }/* else if ( android.os.Build.VERSION.SDK_INT >= 16 ) { v.setImageAlpha( (int) 0.8 * 255 ); } */ //LayoutInflater inflater = ( LayoutInflater ) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE ); //mDragShadow = inflater.inflate( R.layout.list_item_placeholder, null ); WindowManager mWindowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); //mWindowManager.addView( mDragShadow , mWindowParams ); mWindowManager.addView(v, mWindowParams ); mDragView = v; } // destroy drag view private void stopDrag(int itemIndex) { if (mDragView != null) { if (mDragListener != null) mDragListener.onStopDrag(getChildAt(itemIndex)); mDragView.setVisibility(GONE); WindowManager wm = (WindowManager)getContext().getSystemService(Context.WINDOW_SERVICE); wm.removeView(mDragView); //wm.removeView( mDragShadow ); // Recycle the backing bitmap! BitmapDrawable bd = ( BitmapDrawable ) mDragView.getDrawable(); if ( null != bd && null != bd.getBitmap() ) { bd.getBitmap().recycle(); } mDragView.setImageDrawable(null); mDragView = null; //mDragShadow = null; } } private OnScrollListener mScrollListener = new OnScrollListener() { @Override public void onScroll( AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { //if ( null != mDragShadow ) { //mDragShadow.setY( ); //} android.util.Log.i( "DragNDropListView", "Is scrolling"); } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { } }; // private GestureDetector createFlingDetector() { // return new GestureDetector(getContext(), new SimpleOnGestureListener() { // @Override // public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, // float velocityY) { // if (mDragView != null) { // int deltaX = (int)Math.abs(e1.getX()-e2.getX()); // int deltaY = (int)Math.abs(e1.getY() - e2.getY()); // // if (deltaX > mDragView.getWidth()/2 && deltaY < mDragView.getHeight()) { // mRemoveListener.onRemove(mStartPosition); // } // // stopDrag(mStartPosition - getFirstVisiblePosition()); // // return true; // } // return false; // } // }); // } }