1、如何实现：将一个EditText和ListView+PopupWindow 结合起来。自定义一个EditText，在自定义控件中用PopupWindow实现弹出ListView，已达到想要的效果。
2、需要的布局： 1、EditText+ImageButton 的布局
2、ListView的布局
3、代码
EditText+ImageButton 的布局：
ListView的布局：
自定义控件java代码：
package com.wxcoming.wxcomingerp.custom.sptoedit;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.ColorDrawable;
import android.support.annotation.AttrRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.PopupWindow;
import com.wxcoming.wxcomingerp.R;
/**
* Created by adolph_jun on /10/13.
*/
public class CDropEditText extends FrameLayout implements View.OnClickListener, AdapterView.OnItemClickListener {
private EditText mEt;
private ImageButton mIb;
private ListView mLv;
private Context context;
private PopupWindow popWindow;
public CDropEditText(Context context) {
super(context);
this.context = context;
}
public CDropEditText(Context context,AttributeSet attrs) {
super(context, attrs);
//放在三个属性的构造方法处会报错
LayoutInflater.from(context).inflate(R.layout.custome_dropedittext, this);
mEt = (EditText) findViewById(R.id.CD_Et_account);
mIb = (ImageButton) findViewById(R.id.CD_Iv_drop_image);
initPopWindow(mIb);
}
public CDropEditText( Context context, AttributeSet attrs,int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mIb.setOnClickListener(this);
mLv.setOnItemClickListener(this);
}
/**
* 编辑内容改变监听
* @param textWatcher
*/
public void setEditChange(TextWatcher textWatcher){
if(textWatcher!=null){
mEt.addTextChangedListener(textWatcher);
}
}
/**
* 给list添加数据
* @param adapter
*/
public void setAdapter(BaseAdapter adapter){
//popWindow.showAsDropDown(this, 0, 5);
mLv.setAdapter(adapter);
}
private void initPopWindow(View v) {
View view = LayoutInflater.from(getContext()).inflate(R.layout.pop_view, null, false);
mLv = (ListView) view.findViewById(R.id.CD_pop);
popWindow= new PopupWindow(view, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
popWindow.setTouchable(true);
popWindow.setTouchInterceptor(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return false;
}
});
popWindow.setBackgroundDrawable(new ColorDrawable(0x00000000)); //要为popWindow设置一个背景才有效
}
public void showPop(){//弹出listview
popWindow.showAsDropDown(this, 0, 5);
}
@Override//下拉图标按钮监听
public void onClick(View v) {
if(v.getId() == R.id.CD_Iv_drop_image) {
if(popWindow.isShowing()) {
popWindow.dismiss();
return;
}
popWindow.showAsDropDown(this, 0, 5);
}
}
@Override//listview中item的点击事件监听
public void onItemClick(AdapterView> parent, View view, int position, long id) {
mEt.setText(mLv.getAdapter().getItem(position).toString());
popWindow.dismiss();
}
}
