由于项目需求需要点击左侧的listview中的item,右侧随着改变,例如下图是我实现的效果:
今天记录一下,以便以后翻阅.左侧为listvie列表,右侧也为点击左侧listview中的item随着改变。现在主要记录一下左侧listview中点击item背景以及文字颜色的改变。主要有几点:
1、在MainActivity中设置listview的setOnItemClickListener监听 ,以下代码中,主要是调用productNameLisAdapter的两个方法以及对适配器及时更新数据
productNameListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
setReclassifyData(position);//设置listview点击时候右侧二级分类的数据
productNameLisAdapter.setCurrentItem(position);
productNameLisAdapter.setClick(true);
productNameLisAdapter.notifyDataSetChanged();
}
});
2、设置ProductNameLisAdapter
private int mCurrentItem=0;//选中项的下标
private boolean isClick = false;//判断是否选中
//判断初始进来选中的下标==当前的下标 如果i=0时设置背景、文字颜色、以及左侧的竖直tab
if (mCurrentItem == i) {
viewHolder.textViewProjectName.setTextColor(context.getResources().getColor(R.color.colorOrangeRed));
viewHolder.textViewLine.setBackgroundColor(context.getResources().getColor(R.color.colorOrangeRed));
viewHolder.linearLayoutProductNameList.setBackgroundColor(context.getResources().getColor(R.color.colorWhite));
} else {
viewHolder.textViewProjectName.setTextColor(context.getResources().getColor(R.color.colorBlack));
viewHolder.textViewLine.setBackgroundColor(context.getResources().getColor(R.color.colorGray));
viewHolder.linearLayoutProductNameList.setBackgroundColor(context.getResources().getColor(R.color.colorGray));
}
public void setCurrentItem(int currentItem) {
this.mCurrentItem = currentItem;
}
public void setClick(boolean click) {
this.isClick = click;
}
网上有很多代码会设置判断 !isClick但是我代码中设置之后初始进来第一条item的状态是选中正确的,但是在点击item的时候其他状态并没有改变,所以我没有设置,参考的时候看自己的情况
以下为适配器的代码:
public class ProductNameLisAdapter extends BaseAdapter {
Context context;
private List<ClassificationEntity.DataBean.GoodsCategoryListBean> list;
private int mCurrentItem=0;
private boolean isClick = false;
public ProductNameLisAdapter(Context context, List<ClassificationEntity.DataBean.GoodsCategoryListBean> list) {
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup) {
ViewHolder viewHolder;
if (convertView == null) {
viewHolder = new ViewHolder();
convertView = View.inflate(context, R.layout.item_project_name_list, null);
viewHolder.textViewProjectName = convertView.findViewById(R.id.textViewProjectName);
viewHolder.textViewLine = convertView.findViewById(R.id.textViewLine);
viewHolder.linearLayoutProductNameList = convertView.findViewById(R.id.linearLayoutProductNameList);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.textViewProjectName.setText(list.get(i).getShort_name());
if (mCurrentItem == i) {
viewHolder.textViewProjectName.setTextColor(context.getResources().getColor(R.color.colorOrangeRed));
viewHolder.textViewLine.setBackgroundColor(context.getResources().getColor(R.color.colorOrangeRed));
viewHolder.linearLayoutProductNameList.setBackgroundColor(context.getResources().getColor(R.color.colorWhite));
} else {
viewHolder.textViewProjectName.setTextColor(context.getResources().getColor(R.color.colorBlack));
viewHolder.textViewLine.setBackgroundColor(context.getResources().getColor(R.color.colorGray));
viewHolder.linearLayoutProductNameList.setBackgroundColor(context.getResources().getColor(R.color.colorGray));
}
return convertView;
}
public class ViewHolder {
public TextView textViewProjectName, textViewLine;
LinearLayout linearLayoutProductNameList;
}
public void setCurrentItem(int currentItem) {
this.mCurrentItem = currentItem;
}
public void setClick(boolean click) {
this.isClick = click;
}
}
在配上item_project_name_list 的布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutProductNameList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="@+id/textViewLine"
android:layout_width="2dp"
android:layout_height="match_parent"
android:background="@color/colorOrangeRed" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textViewProjectName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:padding="10dp"
android:text="@string/textview_phone_card"
android:textColor="@color/colorOrangeRed" />
<TextView style="@style/MyDivider" />
</LinearLayout>
</LinearLayout>