google原生的Spinner很难满足我们的项目需求,比如设置背景色,这时候我们就需要自定义Spinner
1 采用TextView加 popupwindow实现自定义Spinner
2 效果如下
带有选中效果
3 自定义spinnerview继承 textview 代码如下:
packagecom.teswell.textcar.widget;
importandroid.content.Context;
importandroid.content.res.TypedArray;
importandroid.graphics.Color;
importandroid.graphics.drawable.ColorDrawable;
importandroid.graphics.drawable.Drawable;
importandroid.util.AttributeSet;
importandroid.view.Gravity;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.widget.LinearLayout;
importandroid.widget.PopupWindow;
importandroid.widget.TextView;
importcom.teswell.textcar.R;
importjava.util.List;
/**
* Created by lolin on 2017/5/16.
* 自带下拉选择框
*/
public classSpinnerViewextendsTextViewimplementsView.OnClickListener {
privatePopupWindowpopupWindow;
privateString[]title;
privateSpinnerViewListenerlistener;
publicSpinnerView(Context context) {
super(context);
}
publicSpinnerView(Context context,AttributeSet attrs) {
super(context,attrs);
init(attrs);
}
publicSpinnerView(Context context,AttributeSet attrs, intdefStyleAttr) {
super(context,attrs,defStyleAttr);
init(attrs);
}
public voidsetData(List list) {
title= list.toArray(newString[list.size()]);
invalidate();
}
public voidsetSpinnerViewListener(SpinnerViewListener listener) {
this.listener= listener;
}
private voidinit(AttributeSet attrs) {
TypedArray ta = getContext().obtainStyledAttributes(attrs,R.styleable.TitleSeletorView);
intarrayId = ta.getResourceId(R.styleable.TitleSeletorView_text,0);
if(arrayId !=0) {
title= getResources().getStringArray(arrayId);
}
setOnClickListener(newOnClickListener() {
@Override
public voidonClick(View v) {
showPopupWindow(v);
}
});
setBackgroundColor(getResources().getColor(R.color.home_bg));
setRightDrawable(R.drawable.unselect_popupwindow);
}
private voidsetRightDrawable(intdrawableRes) {
Drawable nav_up = getResources().getDrawable(drawableRes);
nav_up.setBounds(0,0,nav_up.getMinimumWidth(),nav_up.getMinimumHeight());
setCompoundDrawables(null, null,nav_up, null);
}
@Override
public voidonClick(View v) {
popupWindow.dismiss();
setText(((TextView) v).getText());
if(listener!=null)
listener.onTextChager((Integer) v.getTag(),title[(Integer) v.getTag()]);
}
private voidshowPopupWindow(View parent) {
if(title==null||title.length==0)return;
if(popupWindow==null) {
LinearLayout linearLayout =newLinearLayout(getContext());
ViewGroup.LayoutParams lp =newViewGroup.LayoutParams(getWidth(),ViewGroup.LayoutParams.WRAP_CONTENT);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setLayoutParams(lp);
for(inti =0;i
TextView textView =newTextView(getContext());
LinearLayout.LayoutParams tv =newLinearLayout.LayoutParams(getWidth(),34);
tv.setMargins(0,1,0,0);
textView.setTextSize(20f);
textView.setTextColor(Color.WHITE);
textView.setGravity(Gravity.CENTER);
textView.setLayoutParams(tv);
textView.setOnClickListener(this);
textView.setText(title[i]);
textView.setTag(i);
textView.setBackgroundColor(Color.parseColor("#161616"));
linearLayout.addView(textView);
}
popupWindow=newPopupWindow(linearLayout,getWidth(),ViewGroup.LayoutParams.WRAP_CONTENT);
}
// 2017/5/16 设置动画
// popupWindow.setAnimationStyle(R.style.popup_window_anim);
// 2017/5/16 设置背景颜色
popupWindow.setBackgroundDrawable(newColorDrawable(Color.parseColor("#191919")));
// 2017/5/16 设置可以获取焦点
popupWindow.setFocusable(true);
// 2017/5/16 设置可以触摸弹出框以外的区域
popupWindow.setOutsideTouchable(true);
//设置点击区域外消失
popupWindow.setTouchable(true);
popupWindow.setOnDismissListener(newPopupWindow.OnDismissListener() {
@Override
public voidonDismiss() {
setRightDrawable(R.drawable.unselect_popupwindow);
}
});
// 更新popupwindow的状态
// popupWindow.update();
// 2017/5/16 以下拉的方式显示，并且可以设置显示的位置
popupWindow.showAsDropDown(parent,0,0);
setRightDrawable(R.drawable.select_popupwindow);
}
public interfaceSpinnerViewListener {
voidonTextChager(intproint,String text);
}
}
4 自定义Spinnerview继承的是TextView所有用法跟TextView一样
我这里给他增加了自定义属性,不需要的同学可以去掉
