android listview 动态删除行,listview 动态的添加或删除item

本是古典何须时尚 2022-10-18 01:35 219阅读 0赞

MainActivity

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.ListView;

import com.threepapa.virtualmachine.R;

import com.threepapa.virtualmachine.adapter.EditListAdapter;

import com.threepapa.virtualmachine.bean.SongBean;

import com.threepapa.virtualmachine.utils.DebugLog;

import java.util.ArrayList;

import java.util.List;

import butterknife.BindView;

import butterknife.ButterKnife;

import butterknife.OnClick;

import butterknife.OnItemClick;

/\*\*

\* Created by lzy on 2017/3/2.

\*/

public class MainActivity extends BaseActivity \{

@BindView(R.id.btn\_high)

Button btnHigh;

@BindView(R.id.listview)

ListView listview;

private String\[\] mData = \{"设备名称", "设备名称", "设备名称", "设备名称", "设备名称", "设备名称"\};

private EditListAdapter mAdapter;

@Override

protected int setContentByXML() \{

return R.layout.activity\_main;

@Override

protected void initListener() \{

@Override

protected void initView() \{

mAdapter = new EditListAdapter();

listview.setAdapter(mAdapter);

mAdapter.setData(list());

@Override

protected void onCreate(Bundle savedInstanceState) \{

super.onCreate(savedInstanceState);

// TODO: add setContentView(...) invocation

ButterKnife.bind(this);

@OnClick(\{R.id.btn\_high\})

public void onClick(View view) \{

switch (view.getId()) \{

case R.id.btn\_high:

DebugLog.e("增加设备");

mAdapter.addItem();

break;

public List list() \{

List mList = new ArrayList<>();

for (int i = 0; i < mData.length; i++) \{

SongBean bean = new SongBean();

bean.setName(mData\[i\]);

mList.add(bean);

return mList;

@OnItemClick(R.id.listview)

void onItemClick(int position) \{

DebugLog.e("点击了" + position);

adapter

package com.threepapa.virtualmachine.adapter;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.LayoutInflater;

import android.view.MotionEvent;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.RelativeLayout;

import android.widget.TextView;

import com.threepapa.virtualmachine.R;

import com.threepapa.virtualmachine.bean.SongBean;

import com.threepapa.virtualmachine.utils.DebugLog;

import java.util.List;

import butterknife.BindView;

import butterknife.ButterKnife;

/\*\*

\* Created by lzy on 2017/3/2.

\*/

public class EditListAdapter extends BaseAdapter \{

private List mData;

private int index = -1;

public void setData(List data) \{

mData = data;

this.notifyDataSetChanged();

public void addItem() \{

final SongBean songBean = new SongBean();

songBean.setName("添加测试");

songBean.setMac("AABBCCDDEEFF");

mData.add(0, songBean);

this.notifyDataSetChanged();

public void deletItem(int pos) \{

DebugLog.e(pos + "删除的position");

mData.remove(pos);

this.notifyDataSetChanged();

@Override

public int getCount() \{

return mData == null ? 0 : mData.size();

@Override

public Object getItem(int i) \{

return i;

@Override

public long getItemId(int i) \{

return i;

@Override

public View getView(final int i, View view, ViewGroup viewGroup) \{

final ViewHolder holder;

if (view != null) \{

holder = (ViewHolder) view.getTag();

\} else \{

view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.listview\_item, null);

holder = new ViewHolder(view);

view.setTag(holder);

holder.tvMac.setText(mData.get(i).getName());

EditText etMac = holder.etMac;

//使listview中的edittext获取焦点

etMac.setOnTouchListener(new View.OnTouchListener() \{

public boolean onTouch(View view, MotionEvent event) \{

// 在TOUCH的UP事件中，要保存当前的行下标，因为弹出软键盘后，整个画面会被重画

// 在getView方法的最后，要根据index和当前的行下标手动为EditText设置焦点

if (event.getAction() == MotionEvent.ACTION\_UP) \{

index = i;

return false;

\});

etMac.addTextChangedListener(new TextWatcher() \{

@Override

public void beforeTextChanged(CharSequence s, int start, int count, int after) \{

@Override

public void onTextChanged(CharSequence s, int start, int before, int count) \{

DebugLog.e(i + " onTextChanged-----" + s.toString());

//如果该edittext有默认内容，还要在if那里进行过滤

if (index >= 0 && s.length() > 0 && index == i) \{

mData.get(index).setMac(s.toString());

@Override

public void afterTextChanged(Editable s) \{

DebugLog.e(" mac " + s.toString());

\});

etMac.setText(mData.get(i).getMac());

etMac.clearFocus();

if (index != -1 && index == i) \{

// 如果当前的行下标和点击事件中保存的index一致，手动为EditText设置焦点。

etMac.requestFocus();

view.setOnClickListener(new View.OnClickListener() \{

@Override

public void onClick(View view) \{

DebugLog.e(i+"??????????????"+holder.tvMac.getText());

\});

holder.btnDel.setOnClickListener(new View.OnClickListener() \{

@Override

public void onClick(View v) \{

DebugLog.e(" 删除设备 position = " + i);

deletItem(i);

\});

return view;

static class ViewHolder \{

@BindView(R.id.tv\_mac)

TextView tvMac;

@BindView(R.id.btn\_del)

Button btnDel;

@BindView(R.id.et\_mac)

EditText etMac;

@BindView(R.id.rl\_item)

RelativeLayout rlItem;

ViewHolder(View view) \{

ButterKnife.bind(this, view);

bean

package com.threepapa.virtualmachine.bean;

/\*\*

\* Created by lzy on 2017/3/2.

\*/

public class SongBean \{

private String name;

public String getMac() \{

return mac;

public void setMac(String mac) \{

this.mac = mac;

private String mac;

public String getName() \{

return name;

public void setName(String name) \{

this.name = name;

开发过程中遇到 listview item中包含 edittext 点击焦点丢失，参考另外一篇解决方法

android listview 动态删除行,listview 动态的添加或删除item

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