android-listView项目侦听器

概述使用listView时,我注意到在listView中设置一个复选框时,listView.OnItemClicked侦听器不起作用！现在,我正在尝试为listView实现两个不同的单击侦听器.第一个用于listView主体,第二个用于listView主体的checkBox.listView的主体是(现在)生成一个吐司,而checkBox是另一个(现在)生成.

使用ListVIEw时,我注意到在ListVIEw中设置一个复选框时,ListVIEw.OnItemClicked侦听器不起作用！现在,我正在尝试为ListVIEw实现两个不同的单击侦听器.第一个用于ListVIEw主体,第二个用于ListVIEw主体的checkBox. ListVIEw的主体是(现在)生成一个吐司,而checkBox是另一个(现在)生成.

我面临的问题是在引用checkBox.onClick时
该逻辑仅在布局中的最后一个(或任何随机但只有一个)复选框中实现.

ListVIEw布局如下所示：

MainActivity.java：

    private voID registerClickCallBack() {        // Todo auto-generated method stub        ListVIEw List = (ListVIEw)findVIEwByID(R.ID.ListVIEwComplex);        List.setonItemClickListener(new AdapterVIEw.OnItemClickListener() {            @OverrIDe            public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEwClicked, int position,                    long ID) {                // Todo auto-generated method stub                Random clickedRandom = randomList.get(position);                String message = "You have clicked position "+position+" which is Titled "+clickedRandom.getTitle();                Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();                final CheckBox check= (CheckBox)findVIEwByID(R.ID.checkBoxComplex);                check.setonClickListener(new OnClickListener() {                    @OverrIDe                    public voID onClick(VIEw v) {                        // Todo auto-generated method stub                        if(check.isChecked()){                        Toast.makeText(MainActivity.this, "Checked", Toast.LENGTH_LONG).show();                        }                    }                });            }        });    }}

解决方法:

加上这个

  androID:focusable="false"

选中xml中的复选框.

假设您想单击复选框来吐司.试试下面

您应该使用视图支架来平滑滚动和提高性能.

http://developer.android.com/training/improving-layouts/smooth-scrolling.html

在onCreate中初始化您的ListIEw.从编辑之前的先前代码中,我可以看到您两次初始化了ListvIEw.没必要.

将您的活动更改为

 public class MainActivity extends Activity {    private List<Random> randomList = new ArrayList<Random>();    ListVIEw List;    ArrayAdapter<Random> adapter;    private  SparseBooleanArray mCheckStates;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);        List = (ListVIEw)findVIEwByID(R.ID.ListVIEwComplex);        adapter = new Mylistadapter();        populaterandomList();        populateListVIEw();        registerClickCallBack();    }    private voID populaterandomList() {        // Todo auto-generated method stub        randomList.add(new Random("Title One", "Simple", "Status: OK", R.drawable.ic_launcher));        randomList.add(new Random("Title Two", "Complex", "Status: WORKING", R.drawable.ic_launcher));        randomList.add(new Random("Title Three", "Moderate", "Status: NOT OK", R.drawable.ic_launcher));        randomList.add(new Random("Title Four", "Simple", "Status: BAD", R.drawable.ic_launcher));        randomList.add(new Random("Title Five", "Moderate", "Status: NOT OK", R.drawable.ic_launcher));        randomList.add(new Random("Title Six", "Simple", "Status: WORKING",R.drawable.ic_launcher));        randomList.add(new Random("Title Seven", "Complex", "Status: EXCELLENT", R.drawable.ic_launcher));        randomList.add(new Random("Title Eight", "Complex", "Status: NBA", R.drawable.ic_launcher));    }    private voID populateListVIEw() {        List.setAdapter(adapter);    }    private class Mylistadapter extends ArrayAdapter<Random> implements Compoundbutton.OnCheckedchangelistener{        public Mylistadapter(){            super(MainActivity.this,R.layout.layout_complex,randomList);            mCheckStates = new SparseBooleanArray(randomList.size());        }        @OverrIDe        public int getCount() {            // Todo auto-generated method stub            return randomList.size();        }        public VIEw getVIEw(int position, VIEw convertVIEw, VIEwGroup parent){            VIEwHolder vh;            if(convertVIEw == null){                convertVIEw = getLayoutInflater().inflate(R.layout.layout_complex,parent,false);                vh = new VIEwHolder();                vh.imageVIEw = (ImageVIEw)convertVIEw.findVIEwByID(R.ID.itemImage);                vh.TitleText = (TextVIEw)convertVIEw.findVIEwByID(R.ID.itemTitle);                vh.typeText = (TextVIEw)convertVIEw.findVIEwByID(R.ID.itemType);                vh.statusText = (TextVIEw)convertVIEw.findVIEwByID(R.ID.itemStatus);                vh.cb = (CheckBox) convertVIEw.findVIEwByID(R.ID.checkBoxComplex);                convertVIEw.setTag(vh);         } else {             vh = (VIEwHolder) convertVIEw.getTag();         }             Random currentItem = randomList.get(position);            vh.imageVIEw.setimageResource(currentItem.getIconID());            vh.TitleText.setText(currentItem.getTitle());            vh.typeText.setText(currentItem.getType());            vh.statusText.setText(currentItem.getStatus());            vh.cb.setTag(position);            vh.cb.setChecked(mCheckStates.get(position, false));            vh.cb.setonCheckedchangelistener(this);            return convertVIEw;        }         public boolean isChecked(int position) {                return mCheckStates.get(position, false);            }            public voID setChecked(int position, boolean isChecked) {                mCheckStates.put(position, isChecked);            }            public voID toggle(int position) {                setChecked(position, !isChecked(position));            }        @OverrIDe        public voID onCheckedChanged(Compoundbutton buttonVIEw,                boolean isChecked) {             mCheckStates.put((Integer) buttonVIEw.getTag(), isChecked);             if(isChecked)                {                Toast.makeText(MainActivity.this, "Checked at "+(Integer) buttonVIEw.getTag(), Toast.LENGTH_SHORT).show();                }        }        class VIEwHolder        {            TextVIEw TitleText,typeText,statusText;            ImageVIEw imageVIEw;            CheckBox cb;        }    }    private voID registerClickCallBack() {        List.setonItemClickListener(new AdapterVIEw.OnItemClickListener() {            @OverrIDe            public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEwClicked, int position,                    long ID) {                Random clickedRandom = randomList.get(position);                String message = "You have clicked position "+position+" which is Titled "+clickedRandom.getTitle();                Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();            }        });    }}

快照

总结

以上是内存溢出为你收集整理的android-listView项目侦听器全部内容，希望文章能够帮你解决android-listView项目侦听器所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。