一款简单灵活的Android下拉筛选框

   最近接到一个新的项目 项目时间比较紧张,有一个功能类似于58同城,京东的一个下拉筛选框,为了节省时间,从网上面拷贝了一份封装好的代码,进行的自己的一些修改,感觉灵活性还挺高的,分享出来给大家看一看

大致效果如下 可以自己加入自己的布局

         

先看一下这个ExpandTabView这个类  代码比较简单 我就不做具体介绍了 有不懂的可以私信我

public class ExpandTabView extends LinearLayout implements OnDismissListener {private ToggleButton selectedButton;private ArrayList<String> mTextArray = new ArrayList<String>();private ArrayList<RelativeLayout> mViewArray = new ArrayList<RelativeLayout>();private ArrayList<ToggleButton> mToggleButton = new ArrayList<ToggleButton>();private Context mContext;private final int SMALL = 0;private int displayWidth;private int displayHeight;private PopupWindow popupWindow;private int selectPosition;public ExpandTabView(Context context) {super(context);init(context);}public ExpandTabView(Context context, AttributeSet attrs) {super(context, attrs);init(context);}/** * 根据选择的位置设置tabitem显示的值 */public void setTitle(String valueText, int position) {if (position < mToggleButton.size()) {mToggleButton.get(position).setText(valueText);}}public void setTitle(String title){}/** * 根据选择的位置获取tabitem显示的值 */public String getTitle(int position) {if (position < mToggleButton.size() && mToggleButton.get(position).getText() != null) {return mToggleButton.get(position).getText().toString();}return "";}/** * 设置tabitem的个数和初始值 */public void setValue(ArrayList<String> textArray, ArrayList<View> viewArray) {if (mContext == null) {return;}LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);mTextArray = textArray;for (int i = 0; i < viewArray.size(); i++) {final RelativeLayout r = new RelativeLayout(mContext);int maxHeight = (int) (displayHeight * 0.7);RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, maxHeight);rl.leftMargin = 10;rl.rightMargin = 10;r.addView(viewArray.get(i), rl);mViewArray.add(r);r.setTag(SMALL);ToggleButton tButton = (ToggleButton) inflater.inflate(R.layout.toggle_button, this, false);addView(tButton);View line = new TextView(mContext);line.setBackgroundResource(R.drawable.choosebar_line);if (i < viewArray.size() - 1) {LayoutParams lp = new LayoutParams(2, LayoutParams.FILL_PARENT);addView(line, lp);}mToggleButton.add(tButton);tButton.setTag(i);tButton.setText(mTextArray.get(i));r.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {onPressBack();}});r.setBackgroundColor(mContext.getResources().getColor(R.color.popup_main_background));tButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View view) {// initPopupWindow();ToggleButton tButton = (ToggleButton) view;if (selectedButton != null && selectedButton != tButton) {selectedButton.setChecked(false);}selectedButton = tButton;selectPosition = (Integer) selectedButton.getTag();startAnimation();if (mOnButtonClickListener != null && tButton.isChecked()) {mOnButtonClickListener.onClick(selectPosition);}}});}}private void startAnimation() {if (popupWindow == null) {popupWindow = new PopupWindow(mViewArray.get(selectPosition), displayWidth, displayHeight);popupWindow.setAnimationStyle(R.style.PopupWindowAnimation);popupWindow.setFocusable(false);popupWindow.setOutsideTouchable(true);}if (selectedButton.isChecked()) {if (!popupWindow.isShowing()) {showPopup(selectPosition);} else {popupWindow.setOnDismissListener(this);popupWindow.dismiss();hideView();}} else {if (popupWindow.isShowing()) {popupWindow.dismiss();hideView();}}}private void showPopup(int position) {View tView = mViewArray.get(selectPosition).getChildAt(0);if (tView instanceof ViewBaseAction) {ViewBaseAction f = (ViewBaseAction) tView;f.show();}if (popupWindow.getContentView() != mViewArray.get(position)) {popupWindow.setContentView(mViewArray.get(position));}popupWindow.showAsDropDown(this, 0, 0);}/** * 如果菜单成展开状态，则让菜单收回去 */public boolean onPressBack() {if (popupWindow != null && popupWindow.isShowing()) {popupWindow.dismiss();hideView();if (selectedButton != null) {selectedButton.setChecked(false);}return true;} else {return false;}}private void hideView() {View tView = mViewArray.get(selectPosition).getChildAt(0);if (tView instanceof ViewBaseAction) {ViewBaseAction f = (ViewBaseAction) tView;f.hide();}}private void init(Context context) {mContext = context;displayWidth = ((Activity) mContext).getWindowManager().getDefaultDisplay().getWidth();displayHeight = ((Activity) mContext).getWindowManager().getDefaultDisplay().getHeight();setOrientation(LinearLayout.HORIZONTAL);}@Overridepublic void onDismiss() {showPopup(selectPosition);popupWindow.setOnDismissListener(null);}private OnButtonClickListener mOnButtonClickListener;/** * 设置tabitem的点击监听事件 */public void setOnButtonClickListener(OnButtonClickListener l) {mOnButtonClickListener = l;}/** * 自定义tabitem点击回调接口 */public interface OnButtonClickListener {public void onClick(int selectPosition);}}

这个代码基本就是对popupwindow进行了封装 通过对ToggleButton按钮的监听来实现popupwindow的弹出和收回

外部设置的话 也特别简单,只需要将自己定义好的布局传入到list集合中就可以

下面是MainActivity中的代码

public class MainActivity extends AppCompatActivity {    private ExpandTabView expandTabView;    private ArrayList<View> mViewArray = new ArrayList<View>();    private ViewLeft viewLeft;    private ViewMiddle viewMiddle;    private ViewRight viewRight;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        initVaule();        initListener();    }    private void initView() {        expandTabView = (ExpandTabView) findViewById(R.id.expandtab_view);        viewLeft = new ViewLeft(this);        viewMiddle = new ViewMiddle(this);        viewRight = new ViewRight(this);    }    private void initVaule() {        mViewArray.add(viewMiddle);mViewArray.add(viewLeft);mViewArray.add(viewRight);        ArrayList<String> mTextArray = new ArrayList<String>();        mTextArray.add("区域");mTextArray.add("距离");mTextArray.add("距离");        expandTabView.setValue(mTextArray, mViewArray);//expandTabView.setTitle(viewLeft.getShowText(), 0);//expandTabView.setTitle(viewMiddle.getShowText(), 1);//expandTabView.setTitle(viewRight.getShowText(), 2);    }    private void initListener() {        viewLeft.setOnSelectListener(new ViewLeft.OnSelectListener() {            @Override            public void getValue(String distance, String showText) {                onRefresh(viewLeft, showText);            }        });        viewMiddle.setOnSelectListener(new ViewMiddle.OnSelectListener() {            @Override            public void getValue(String showText) {                onRefresh(viewMiddle,showText);            }        });        viewRight.setOnSelectListener(new ViewRight.OnSelectListener() {            @Override            public void getValue(String distance, String showText) {                onRefresh(viewRight, showText);            }        });    }    private void onRefresh(View view, String showText) {        expandTabView.onPressBack();        int position = getPositon(view);        if (position >= 0 && !expandTabView.getTitle(position).equals(showText)) {            expandTabView.setTitle(showText, position);        }//        Toast.makeText(MainActivity.this, showText, Toast.LENGTH_SHORT).show();    }    private int getPositon(View tView) {        for (int i = 0; i < mViewArray.size(); i++) {            if (mViewArray.get(i) == tView) {                return i;            }        }        return -1;    }    @Override    public void onBackPressed() {        if (!expandTabView.onPressBack()) {            finish();        }    }}

 以上就是这个筛选菜单栏的大致用法 个人感觉还是比较简单的,也比较灵活,修改起来也比较方便

 但是在项目中使用的时候碰到了一个问题,就是popupwindow在7.0的手机上弹出位置异常的问题,查了一下,是因为手机状态栏高度的问题

 于是重写了一下popupwindow的showAsDropDown方法就解决了 下面是具体代码

    @Override    public void showAsDropDown(View anchor, int xoff, int yoff) {        if(Build.VERSION.SDK_INT >= 24) {            Rect rect = new Rect();            anchor.getGlobalVisibleRect(rect);            int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;            setHeight(h);        }        super.showAsDropDown(anchor, xoff, yoff);    }

通过对SDK版本来进行判断 大于24的话就执行这个方法 解决了popupwindow在7.0手机上异常弹出的问题

最后附上Demo地址  http://download.csdn.net/download/smallredzi/10161529