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    使用一个ArrayAdapter类的安卓定制列表视图视图、列表、ArrayAdapter

    2023-09-11 12:40:12 作者：女王(Queen)ゆ性

    如何使用iPhone等Android的Tick标志来选择行项目？IAM使用的ImageView在list_row.xml.when我点击列表行项目的话，我表现出图像中排ImageView的。

     如果（的getItem（位置）！= NULL）{
img.setvisibilty（View.Visible）;}
其他{的System.out.println（imagenull）;}

    IAM的利用这一点，但图像显示在最后一排only.please帮助我如何使用对勾标记的图像来选择项目。

     公共类DistanceArrayAdapter扩展ArrayAdapter＆LT;恒＆GT; {
公共静态字符串类别，状态，千里;
公共ImageView的IMG;
私人上下文的背景下;
私人诠释电流= -1;
ArrayList的＆LT;恒＆GT;数据对象;

公共DistanceArrayAdapter（上下文的背景下，INT textViewResourceId，
ArrayList的＆LT;恒＆GT;数据对象）{
超（背景下，textViewResourceId，数据对象）;
this.context =背景;
}
@覆盖
公共查看getView（最终诠释的立场，观点convertView，ViewGroup中父）{
查看rowView = convertView;
如果（rowView == NULL）{
LayoutInflater充气=（LayoutInflater）上下文
            .getSystemService（Context.LAYOUT_INFLATER_SERVICE）;

rowView = inflater.inflate（R.layout.category_row，父母，假）;

}
    // TextView中的TextView =（TextView中）rowView.findViewById（R.id.text1）;
TextView的textView1 =（TextView中）rowView.findViewById（R.id.text2）;
    //textView.setText(""+getItem(position).id）;
textView1.setText（+的getItem（位置）.caption）;
IMG =（ImageView的）rowView.findViewById（R.id.img）;
img.setVisibility（View.GONE）;
如果（位置％2 == 1）
{
rowView.setBackgroundResource（R.color.even_list）;
}
其他
    {
        rowView.setBackgroundResource（R.color.odd_list）;
    }

    rowView.setOnClickListener（新OnClickListener（）{

      @覆盖
        公共无效的onClick（视图v）{

            如果（img.getVisibility（）== View.GONE）
            {
                img.setVisibility（View.VISIBLE）;
                的System.out.println（1）;
            }
如果（img.getVisibility（）== View.VISIBLE）{
img.setVisibility（View.GONE）;
的System.out.println（12）;
}

英里=的getItem（位置）.caption;
的System.out.println（英里+英里）;
}
}）;
返回rowView;
}
}
    31 arrayadapter的原理和使用

    解决方案

    从的https://groups.google.com/forum/?fromgroups#!topic/android-developers/No0LrgJ6q2M

     公共类MainActivity扩展活动实现AdapterView.OnItemClickListener {
    的String [] GENRES =新的String [] {行动，探险，动画，儿童，喜剧，纪录片，戏剧，外交，历史，独立报， 浪漫，科幻，电视，颤栗};
    私人CheckBoxAdapter mCheckBoxAdapter;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;
        最终的ListView ListView的=（的ListView）findViewById（R.id.lv）;

        listView.setItemsCanFocus（假）;
        listView.setTextFilterEnabled（真正的）;
        listView.setOnItemClickListener（本）;
        mCheckBoxAdapter =新CheckBoxAdapter（本，流派）;
        listView.setAdapter（mCheckBoxAdapter）;
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setOnClickListener（新OnClickListener（）{

            @覆盖
            公共无效的onClick（视图v）{
                // TODO自动生成方法存根
                StringBuilder的结果=新的StringBuilder（）;
                的for（int i = 0; I＆LT; GENRES.length;我++）{
                    如果（mCheckBoxAdapter.mCheckStates.get（一）==真）{
                        result.append（流派[I]）;
                        result.append（\ N）;
                    }

                }
                Toast.makeText（MainActivity.this，结果，1000）.show（）;
            }

        }）;
    }

    公共无效onItemClick（适配器视图父，视图中查看，INT位置，长的id）{
        mCheckBoxAdapter.toggle（位置）;
    }

    类CheckBoxAdapter扩展ArrayAdapter实现CompoundButton.OnCheckedChangeListener {
        LayoutInflater mInflater;
        TextView的TV1，电视;
        复选框CB;
        的String []根;
        私人SparseBooleanArray mCheckStates;
        私人SparseBooleanArray mCheckStates;

        CheckBoxAdapter（MainActivity背景下，的String []类型）{
            超（背景下，0，体裁）;
            mCheckStates =新SparseBooleanArray（genres.length）;
            mInflater =（LayoutInflater）MainActivity.this.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
            根=类型;
        }

        @覆盖
        公众诠释getCount将（）{
            // TODO自动生成方法存根
            返回gen.length;
        }
    }
}

    activity_main.xml 

     ＆LT; RelativeLayout的
 的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
 机器人：layout_width =FILL_PARENT
 机器人：layout_height =FILL_PARENT＆GT;

 ＆LT;的ListView
 机器人：ID =@ + ID / LV
 机器人：layout_width =WRAP_CONTENT
  机器人：layout_height =WRAP_CONTENT
  机器人：layout_above =@ + ID /按钮1/＆GT;
  ＆LT;按钮
      机器人：ID =@ + ID /按钮1
      机器人：layout_width =WRAP_CONTENT
      机器人：layout_height =WRAP_CONTENT
      机器人：layout_alignParentBottom =真
      机器人：layout_centerHorizo​​ntal =真
      机器人：文本=按钮/＆GT;

＆LT; / RelativeLayout的＆GT;

    而对于复选框XML文件：

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; RelativeLayout的的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
机器人：layout_width =match_parent
机器人：layout_height =match_parent＆GT;

＆LT;的TextView
    机器人：ID =@ + ID / textView1
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：layout_alignParentLeft =真
    机器人：layout_alignParentTop =真
    机器人：layout_marginLeft =15dp
    机器人：layout_marginTop =34dp
    机器人：文本=TextView的/＆GT;

＆LT;复选框
    机器人：ID =@ + ID / checkBox1
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：layout_alignParentRight =真
    机器人：layout_below =@ + ID / textView1
    机器人：layout_marginRight =22dp
    机器人：layout_marginTop =23dp/＆GT;

 ＆LT; / RelativeLayout的＆GT;

    当您单击显示与项目choosen列表敬酒消息的按钮。您可以根据您的要求修改上述。

    how to select row item using Tick mark like iphone in android?iam using imageview in list_row.xml.when i click the list row item then i show image in row imageview.

    if(getItem(position)!=null){
img.setvisibilty(View.Visible);}        
else{System.out.println("imagenull");}

    iam using this but image display in last row only.please help me how to select item using tickmark image.

    public class DistanceArrayAdapter extends ArrayAdapter<Constant>{
public static String category,state,miles;
public ImageView img;
private Context context;
private int current = -1;
ArrayList<Constant> dataObject;

public DistanceArrayAdapter(Context context, int textViewResourceId,
ArrayList<Constant> dataObject) {
super(context, textViewResourceId, dataObject);
this.context=context;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View rowView=convertView;
if(rowView==null){
LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

rowView = inflater.inflate(R.layout.category_row, parent, false);

}
    //TextView textView = (TextView) rowView.findViewById(R.id.text1);
TextView textView1 = (TextView) rowView.findViewById(R.id.text2);
    //textView.setText(""+getItem(position).id);
textView1.setText(""+getItem(position).caption);
img=(ImageView)rowView.findViewById(R.id.img);
img.setVisibility(View.GONE);
if(position%2==1)
{
rowView.setBackgroundResource(R.color.even_list);
}
else
    {
        rowView.setBackgroundResource(R.color.odd_list);
    }

    rowView.setOnClickListener(new OnClickListener() {

            @Override
        public void onClick(View v) {

            if(img.getVisibility()==View.GONE)
            {
                img.setVisibility(View.VISIBLE);
                System.out.println("1");
            }
if(img.getVisibility()==View.VISIBLE){
img.setVisibility(View.GONE);
System.out.println("12");
}

miles=getItem(position).caption;
System.out.println("miles"+miles);
}
});
return rowView;
}
}

    解决方案

    Drawing from https://groups.google.com/forum/?fromgroups#!topic/android-developers/No0LrgJ6q2M

    public class MainActivity extends Activity implements AdapterView.OnItemClickListener {
    String[] GENRES = new String[] {"Action", "Adventure", "Animation", "Children", "Comedy", "Documentary", "Drama", "Foreign", "History", "Independent", "Romance", "Sci-Fi", "Television", "Thriller"};
    private CheckBoxAdapter mCheckBoxAdapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final ListView listView = (ListView) findViewById(R.id.lv);

        listView.setItemsCanFocus(false);
        listView.setTextFilterEnabled(true);
        listView.setOnItemClickListener(this);
        mCheckBoxAdapter = new CheckBoxAdapter(this, GENRES);
        listView.setAdapter(mCheckBoxAdapter);
        Button b = (Button) findViewById(R.id.button1);
        b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                StringBuilder result = new StringBuilder();
                for (int i = 0; i < GENRES.length; i++) {
                    if (mCheckBoxAdapter.mCheckStates.get(i) == true) {
                        result.append(GENRES[i]);
                        result.append("\n");
                    }

                }
                Toast.makeText(MainActivity.this, result, 1000).show();
            }

        });
    }

    public void onItemClick(AdapterView parent, View view, int position, long id) {
        mCheckBoxAdapter.toggle(position);
    }

    class CheckBoxAdapter extends ArrayAdapter implements CompoundButton.OnCheckedChangeListener {
        LayoutInflater mInflater;
        TextView tv1, tv;
        CheckBox cb;
        String[] gen;
        private SparseBooleanArray mCheckStates;
        private SparseBooleanArray mCheckStates;

        CheckBoxAdapter(MainActivity context, String[] genres) {
            super(context, 0, genres);
            mCheckStates = new SparseBooleanArray(genres.length);
            mInflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            gen = genres;
        }

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return gen.length;
        }
    }
}

    activity_main.xml

     <RelativeLayout
 xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent">

 <ListView
 android:id="@+id/lv"
 android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_above="@+id/button1"/>
  <Button
      android:id="@+id/button1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentBottom="true"
      android:layout_centerHorizontal="true"
      android:text="Button" />

</RelativeLayout>

    And the XML file for the checkboxes:

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="15dp"
    android:layout_marginTop="34dp"
    android:text="TextView" />

<CheckBox
    android:id="@+id/checkBox1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_below="@+id/textView1"
    android:layout_marginRight="22dp"
    android:layout_marginTop="23dp" />

 </RelativeLayout>

    When you click the button a toast message with list of item choosen is displayed. You can modify the above according to your requirements.

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