高仿微信朋友圈评论popwindow

/**
 *  功能描述：标题按钮上的弹窗（继承自PopupWindow）
 */
public class TitlePopup extends PopupWindow {

	private TextView priase;
	private TextView comment;
	private TextView cancel;

	private Context mContext;

	// 列表弹窗的间隔
	protected final int LIST_PADDING = 10;

	// 实例化一个矩形
	private Rect mRect = new Rect();

	// 坐标的位置（x、y）
	private final int[] mLocation = new int[2];

	// 屏幕的宽度和高度
	private int mScreenWidth, mScreenHeight;

	// 判断是否需要添加或更新列表子类项
	private boolean mIsDirty;

	// 位置不在中心
	private int popupGravity = Gravity.NO_GRAVITY;

	// 弹窗子类项选中时的监听
	private OnItemOnClickListener mItemOnClickListener;

	// 定义弹窗子类项列表
	private ArrayList<ActionItem> mActionItems = new ArrayList<ActionItem>();

	public TitlePopup(Context context) {
		// 设置布局的参数
		this(context, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
	}

	public TitlePopup(Context context, int width, int height) {
		this.mContext = context;

		// 设置可以获得焦点
		setFocusable(true);
		// 设置弹窗内可点击
		setTouchable(true);
		// 设置弹窗外可点击
		setOutsideTouchable(true);

		// 获得屏幕的宽度和高度
//		mScreenWidth = Util.getScreenWidth(mContext);
//		mScreenHeight = Util.getScreenHeight(mContext);

		// 设置弹窗的宽度和高度
		setWidth(width);
		setHeight(height);

		setBackgroundDrawable(new BitmapDrawable());

		// 设置弹窗的布局界面
		View view = LayoutInflater.from(mContext).inflate(
				R.layout.comment_popu, null);
		setContentView(view);
		Log.e("",
				"3333==========" + view.getHeight() + "    " + view.getWidth());
		priase = (TextView) view.findViewById(R.id.popu_praise);
		comment = (TextView) view.findViewById(R.id.popu_comment);
		cancel = (TextView) view.findViewById(R.id.popu_cancel);
		priase.setOnClickListener(onclick);
		comment.setOnClickListener(onclick);
	}

	/**
	 * 显示弹窗列表界面
	 */
	public void show(final View c) {
		// 获得点击屏幕的位置坐标
		c.getLocationOnScreen(mLocation);
		// 设置矩形的大小
		mRect.set(mLocation[0], mLocation[1], mLocation[0] + c.getWidth(),
				mLocation[1] + c.getHeight());
		priase.setText(mActionItems.get(0).mTitle);
		// 判断是否需要添加或更新列表子类项
		if (mIsDirty) {
			// populateActions();
		}
		Log.e("", "333  " + this.getHeight());// 50
		Log.e("", "333  " + c.getHeight());// 96
		Log.e("", "333  " + this.getWidth());

		Log.e("", "333  " + (mLocation[1]));

		// 显示弹窗的位置
		// showAtLocation(view, popupGravity, mScreenWidth - LIST_PADDING
		// - (getWidth() / 2), mRect.bottom);
		showAtLocation(c, Gravity.NO_GRAVITY, mLocation[0] - this.getWidth()
				- 10, mLocation[1] - ((this.getHeight() - c.getHeight()) / 2));
	}

	OnClickListener onclick = new OnClickListener() {
		@Override
		public void onClick(View v) {

			switch (v.getId()) {
				case R.id.popu_comment:
					mItemOnClickListener.onItemClick(mActionItems.get(1), 1);
					dismiss();
					break;
				case R.id.popu_praise:
					mItemOnClickListener.onItemClick(mActionItems.get(0), 0);
					dismiss();
					break;

			}
		}

	};

	/**
	 * 添加子类项
	 */
	public void addAction(ActionItem action) {
		if (action != null) {
			mActionItems.add(action);
			mIsDirty = true;
		}
	}

	/**
	 * 清除子类项
	 */
	public void cleanAction() {
		if (mActionItems.isEmpty()) {
			mActionItems.clear();
			mIsDirty = true;
		}
	}

	/**
	 * 根据位置得到子类项
	 */
	public ActionItem getAction(int position) {
		if (position < 0 || position > mActionItems.size())
			return null;
		return mActionItems.get(position);
	}

	/**
	 * 移除指定位置Item
	 * @param position
	 */
	public void removeActionItem(int position){
		if (position < 0 || position > mActionItems.size()&&mActionItems!=null){
			return ;
		}else{
			mActionItems.remove(position);
		}
	}

	/**
	 * 移除指定位置Item
	 * @param position
	 */
	public void addPositionActionItem(int position,ActionItem item){
		if (position < 0 || position > mActionItems.size()&&mActionItems!=null){
			return ;
		}else{
			mActionItems.add(position,item);
		}
	}

	/**
	 * 设置监听事件
	 */
	public void setItemOnClickListener(
			OnItemOnClickListener onItemOnClickListener) {
		this.mItemOnClickListener = onItemOnClickListener;
	}

	/**
	 * @author yangyu 功能描述：弹窗子类项按钮监听事件
	 */
	public static interface OnItemOnClickListener {
		public void onItemClick(ActionItem item, int position);
	}
}