Android(安卓)下实现带有图标和Checkbox的 ListView Item（2）
16lz
2022-06-15
布局文件
- XML code
-
<? xml version="1.0" encoding="utf-8" ?> < LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android" android:layout_width ="fill_parent" android:layout_height ="wrap_content" android:orientation ="horizontal" > < RelativeLayout android:id ="@+id/RelativeLayout01" android:layout_width ="fill_parent" android:layout_height ="wrap_content" android:gravity ="center_horizontal" > < ImageView android:id ="@+id/ImageView01_checklayout" android:layout_width ="wrap_content" android:layout_height ="wrap_content" android:layout_alignParentLeft ="true" > </ ImageView > < TextView android:id ="@+id/TextView01_checklayout" android:layout_width ="wrap_content" android:layout_height ="wrap_content" android:layout_marginTop ="20px" android:layout_marginLeft ="70px" android:textSize ="20px" android:gravity ="center" > </ TextView > < CheckBox android:id ="@+id/CheckBox01_checklayout" android:layout_width ="wrap_content" android:layout_height ="wrap_content" android:layout_alignParentRight ="true" android:layout_marginTop ="14px" ></ CheckBox > </ RelativeLayout > </ LinearLayout >
- Java code
package com.jingoal.mobile.android.jingoal.adapter; import java.util.ArrayList; import java.util.List; import com.jingoal.mobile.android.jingoal.R; import com.jingoal.mobile.android.jingoal.holder.CheckBoxViewHolder; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.TextView; import android.widget.CompoundButton.OnCheckedChangeListener; /** * * 带复选框的listView的适配器 * @author Administrator * */ public class MyCheckBoxAdapter extends BaseAdapter { // 用来将布局文件变成列表中的文件 private LayoutInflater mInflater = null ; private Bitmap mIcon = null ; private Context myContext = null ; private List < People > data = null ; private ArrayList < People > checkeddata = new ArrayList < People > (); private ArrayList < CheckBox > allCheck = new ArrayList < CheckBox > (); // 是否全选 private boolean isSelectAll = false ; public MyCheckBoxAdapter(Context context, List < People > data) { this .myContext = context; this .mInflater = LayoutInflater.from( this .myContext); this .mIcon = BitmapFactory.decodeResource( this .myContext.getResources(), R.drawable.icon1); this .data = data; } @Override public int getCount() { return data.size(); } @Override public Object getItem( int position) { // TODO Auto-generated method stub return data.get(position); } @Override public long getItemId( int position) { // TODO Auto-generated method stub return position; } @Override public View getView( final int position, View view, ViewGroup parent) { final CheckBoxViewHolder holder; // 布局的结构类 if (view == null ) // 如果现在没有视图 { // 初始化布局文件和布局的组建结构 view = this .mInflater.inflate(R.layout.check_layout, null ); holder = new CheckBoxViewHolder(); holder.mImageView = (ImageView) view.findViewById(R.id.ImageView01_checklayout); holder.mTextView = (TextView) view.findViewById(R.id.TextView01_checklayout); holder.mCheckBox = (CheckBox) view.findViewById(R.id.CheckBox01_checklayout); // 设置是否被全选 if ( this .isSelectAll == true ) { holder.mCheckBox.setChecked( true ); } else { holder.mCheckBox.setChecked( false ); } view.setTag(holder); // 将布局指向一个模式 } else { holder = (CheckBoxViewHolder) view.getTag(); } // 设置布局里的组建元素 holder.mTextView.setText(data.get(position).toString()); holder.mImageView.setImageBitmap(mIcon); if (holder.mCheckBox.isChecked()) { if ( this .checkeddata.size() < 0 ) { this .checkeddata.add( this .data.get(position)); } else { if ( this .checkeddata.indexOf( this .data.get(position)) < 0 ) { this .checkeddata.add( this .data.get(position)); } } } holder.mCheckBox .setOnCheckedChangeListener( new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton button, boolean isSelected) { ArrayList < People > list = MyCheckBoxAdapter. this .checkeddata; if (isSelected == true ) { if (list.size() > 0 ) { People people = MyCheckBoxAdapter. this .data .get(position); if (list.indexOf(people) < 0 ) { list.add(people); } } else { list.add(MyCheckBoxAdapter. this .data .get(position)); } } else { if (list.size() > 0 ) { People people = MyCheckBoxAdapter. this .data .get(position); for ( int i = 0 ; i < list.size(); i ++ ) { if (people == list.get(i)) { list.remove(i); } } } } } }); return view; } /** * 得到已选择的条数 * @return */ public int getCheckedSize() { return this .checkeddata.size(); } /** * 获得选择的数据列表 * @return */ public ArrayList < People > getChecked() { return this .checkeddata; } /** * 是否全选 * @return */ public boolean isSelectAll() { return isSelectAll; } /** * 清除所有的选项 */ public void removeAllChecked() { int size = getCheckedSize(); for ( int i = 0 ; i < size ; i ++ ) { this .checkeddata.removeAll(checkeddata); } } /** * 设置全选 * @param isSelectAll */ public void setSelectAll( boolean isSelectAll) { this .isSelectAll = isSelectAll; } }
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