ListView的私人订制

/** * Created by magic on 2016年5月12日.带下拉刷新/上拉加载的listview */public class PullDownRefurbishLoadListView extends ListView implements OnScrollListener, OnClickListener { /** * head view */ private View headView; /** * head view height */ private int headViewHeight; /** * 是否可以下滑刷新 */ private boolean isPullDownRefurbish = false; /** * 文本状态描述 */ private TextView tev_status; /** * 进度条 */ private ImageView progressBar; /** * foot view */ private View footView; /** * foot view height */ private int footViewHeight; /** * 是否可以上拉加载 */ private boolean isPullHighLoad = false; /** * 底部布局 */ LinearLayout layout_listviewFoot; /** * 底部文本状态描述 */ private TextView tev_status_foot; /** * 进度条 */ ImageView progressBar_foot; /** * 按下后的初始Y位置 */ private float beginY = 0; /** * 移动的距离 */ private int moveY = 0; /** * 正常状态 */ private final static int NONE = 0; /** * 下拉/上拉状态 */ private final static int PULL = 1; /** * 释放刷新状态 */ private final static int RELEASE = 2; /** * 刷新状态 */ private final static int REFURBISH = 3; /** * 状态 */ private static int STATUS; /** * 是否允许下拉刷新 */ private boolean isRefurbishAble = true; /** * 是否允许上拉加载 */ private boolean isLoadAble = true; /** * context */ private Context context; /** * 动画 */ private RotateAnimation rotateAnimation, rotateAnimation2; /** * 接口 */ private IPullDownRefurbishLoadListView refurbishLoadListView; public PullDownRefurbishLoadListView(Context context) { super(context); init(context); } public PullDownRefurbishLoadListView(Context context, AttributeSet attrs) { super(context, attrs); init(context); } public PullDownRefurbishLoadListView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(context); } /** * 添加head/foot布局 * * @param context */ private void init(Context context) { headView = LayoutInflater.from(context).inflate(R.layout.listview_head, null); this.addHeaderView(headView); // 设置滑动监听 this.setOnScrollListener(this); headView.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); headViewHeight = headView.getMeasuredHeight(); // 设置headView 偏移出屏幕 headView.setPadding(0, -headViewHeight, 0, 0); tev_status = (TextView) findViewById(R.id.tev_listviewHead_status); progressBar = (ImageView) findViewById(R.id.prb_listviewHead_refurbish); footView = LayoutInflater.from(context).inflate( R.layout.listview_footer, null); this.addFooterView(footView); footView.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); footViewHeight = footView.getMeasuredHeight(); layout_listviewFoot = (LinearLayout) footView .findViewById(R.id.layout_listviewFoot); tev_status_foot = (TextView) footView .findViewById(R.id.tev_listviewFoot_state); progressBar_foot = (ImageView) findViewById(R.id.prb_listviewFoot_load); tev_status_foot.setOnClickListener(this); this.context = context; } @Override public boolean onTouchEvent(MotionEvent ev) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: beginY = ev.getY(); if (STATUS == REFURBISH) { // 不消耗事件 return false; } case MotionEvent.ACTION_MOVE: this.moveY = (int) (ev.getY() - beginY); if (isRefurbishAble && isPullDownRefurbish && moveY >= 0) { if (moveY > 0) { if (moveY > headViewHeight) { STATUS = RELEASE; if (moveY >= (headViewHeight + dp2px(20, context))) { moveY = headViewHeight + dp2px(20, context); } } else if (moveY > 0 && moveY <= headViewHeight) { STATUS = PULL; } else { STATUS = NONE; } setRefurbishByStatus((int) moveY); } } if (isLoadAble && isPullHighLoad && moveY < 0) { tev_status_foot.setVisibility(View.GONE); progressBar_foot.setVisibility(View.VISIBLE); if (Math.abs(moveY) > footViewHeight) { STATUS = RELEASE; } else if (Math.abs(moveY) > 0 && Math.abs(moveY) <= footViewHeight) { STATUS = PULL; } else { STATUS = NONE; } } break; case MotionEvent.ACTION_UP: if (isRefurbishAble && isPullDownRefurbish && moveY >= 0) { switch (STATUS) { case PULL: moveY = 0; setRefurbishByStatus(-headViewHeight); break; case RELEASE: STATUS = REFURBISH; setRefurbishByStatus((int) moveY); if (refurbishLoadListView != null) { refurbishLoadListView.refurbish(); } break; } } if (isLoadAble && isPullHighLoad && moveY < 0) { switch (STATUS) { case PULL: moveY = 0; STATUS = NONE; tev_status_foot.setVisibility(View.VISIBLE); progressBar_foot.setVisibility(View.GONE); break; case RELEASE: STATUS = REFURBISH; progressBar_foot.clearAnimation(); if (rotateAnimation2 != null) { rotateAnimation2.cancel(); } setAnimationToProgressBarFoot(); break; } } break; } return super.onTouchEvent(ev); } /** * 设置head布局的上内边距 * * @param size */ private void setHeadPaddingTop(int size) { size = size + (-headViewHeight); headView.setPadding(0, size, 0, 0); } /** * 根据状态设置刷新HeadView显示的内容 */ private void setRefurbishByStatus(int moveY) { switch (STATUS) { case NONE: tev_status.setText("下拉刷新"); progressBar.setImageResource(R.drawable.ic_ptr_pull); setHeadPaddingTop(-headViewHeight); break; case PULL: tev_status.setText("下拉刷新"); progressBar.setImageResource(R.drawable.ic_ptr_pull); setHeadPaddingTop(moveY); break; case RELEASE: tev_status.setText("释放刷新"); progressBar.setImageResource(R.drawable.ic_ptr_release); setHeadPaddingTop(moveY); break; case REFURBISH: tev_status.setText("刷新中"); progressBar.setImageResource(R.drawable.ic_ptr_loading); setHeadPaddingTop(headViewHeight); if (rotateAnimation == null) { rotateAnimation = new RotateAnimation(0.0f, 180.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); rotateAnimation.setDuration(150); rotateAnimation.setRepeatCount(-1); } progressBar.setAnimation(rotateAnimation); rotateAnimation.start(); break; } } /** * 设置对外公开接口 * * @param pullDownRefurbish */ public void setIPullDownRefurbish( IPullDownRefurbishLoadListView refurbishLoadListView) { this.refurbishLoadListView = refurbishLoadListView; } /** * 刷新完成执行 */ public void setPullDownRefurbishFinish() { moveY = 0; STATUS = NONE; setRefurbishByStatus((int) moveY); progressBar.clearAnimation(); rotateAnimation.cancel(); } /** * 加载完成执行 */ public void setPullDownLoadFinish() { moveY = 0; STATUS = NONE; progressBar_foot.clearAnimation(); rotateAnimation2.cancel(); progressBar_foot.setVisibility(View.GONE); tev_status_foot.setVisibility(View.VISIBLE); } /** * 设置是否允许下拉刷新 * * @param isRefurbishAble */ public void setRefurbishAble(boolean isRefurbishAble) { this.isRefurbishAble = isRefurbishAble; } /** * 设置是否可以上拉加载 * * @param isLoadAble */ public void setLoadAble(boolean isLoadAble) { this.isLoadAble = isLoadAble; if (!isLoadAble) { layout_listviewFoot.setVisibility(View.GONE); } } @Override public void onScroll(AbsListView arg0, int arg1, int arg2, int arg3) { // 参数： // 查看其滚动状态的视图 // firstvisibleitem -第一个可见的细胞指数（忽略如果visibleitemcount = = 0） // visibleitemcount -可见细胞数 // totalitemcount -在列表适配器项目数 // arg1为0时 列表在最顶部 isPullDownRefurbish = arg1 == 0 ? true : false; // arg1为最后一个时arg1==arg3 isPullHighLoad = (arg1 + arg2) == arg3 ? true : false; } @Override public void onScrollStateChanged(AbsListView arg0, int arg1) { } /** * dp转px */ private int dp2px(float value, Context context) { final float scale = context.getResources().getDisplayMetrics().densityDpi; return (int) (value * (scale / 160) + 0.5f); } /** * 为progressBar_foot设置动画 */ private void setAnimationToProgressBarFoot() { if (rotateAnimation2 == null) { rotateAnimation2 = new RotateAnimation(0.0f, 180.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); rotateAnimation2.setDuration(150); rotateAnimation2.setRepeatCount(-1); } progressBar_foot.setAnimation(rotateAnimation2); rotateAnimation2.start(); if (refurbishLoadListView != null) { refurbishLoadListView.load(); } } @Override public void onClick(View v) { // 点击查看更多 tev_status_foot.setVisibility(View.GONE); progressBar_foot.setVisibility(View.VISIBLE); setAnimationToProgressBarFoot(); } /** * 接口 */ interface IPullDownRefurbishLoadListView { /** * 刷新事件回调 */ void refurbish(); /** * 加载回调 */ void load(); }}