onclick button is not working in listview

问题:

My project contains listView(homelistView) that contains button(btnList).

When I click on button(btnList) it must go to another Activity. I tried a lot but I didn't find a good example.

Please suggest me a good example regarding this.

Below is my code:

Here is my listview contains button. When on click of button it must go to other activity

  --------------------------------A--
  text  text      button(btnList) B
  --------------------------------C---
  text  text      BUTTON(btnList) D
  --------------------------------E--

homempleb.xml

Before i used this code in xml. buttonlist worked fine for me as per below code

       <ListView              
            android:id="@+id/homelistView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1.04"
            android:dividerHeight="0dip" >

      </ListView> 

  EfficientAdapter.java

public EfficientAdapter(Context context) {
        mInflater = LayoutInflater.from(context);
this.context=context;
    }

     In your ViewHolder class you need to add `Button btnList.`

holder.btnList.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent next=new Intent(context, SeviceDetails.class);
                context.startActivity(next);
            }
        });

homempleb.xml

Currently i added scroll index to my listview and changed the code as per below.. Listbutton is not working for me now.. Plz help me u can see code for quick reference in EfficientAdapter.JAVA-----> getview method--->holder.btnList.

  <com.woozzu.android.widget.IndexableListView

            android:id="@+id/homelistView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1.04"
            android:dividerHeight="0dip" >
    </com.woozzu.android.widget.IndexableListView>

MainActivity.java

  public class MainActivity extends Activity implements
    SearchView.OnQueryTextListener, SearchView.OnCloseListener {

private ListView listView;
// private IndexableListView listView;
private SearchView search;
EfficientAdapter objectAdapter;
// EfficientAdapter2 objectAdapter1;
int textlength = 0;
private CheckBox checkStat, checkRoutine, checkTat;
private ArrayList<Patient> patientListArray;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.homempleb);
    Log.i("scan", " txtScanResult ");

    ActionItem nextItem = new ActionItem();
    final QuickAction quickAction = new QuickAction(this,
            QuickAction.VERTICAL);
    quickAction.addActionItem(nextItem);
    quickAction.setOnDismissListener(new QuickAction.OnDismissListener() {
        @Override
        public void onDismiss() {
            Toast.makeText(getApplicationContext(), "Dismissed",
                    Toast.LENGTH_SHORT).show();
        }
    });

    search = (SearchView) findViewById(R.id.searchView1);
    search.setIconifiedByDefault(false);
    search.setOnQueryTextListener(this);
    search.setOnCloseListener(this);
    search.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            quickAction.show(v);
        }
    });
    checkStat = (CheckBox) findViewById(R.id.checkBoxStat);
    checkRoutine = (CheckBox) findViewById(R.id.checkBoxRoutine);
    checkTat = (CheckBox) findViewById(R.id.checkBoxTat);
    checkStat.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            if (((CheckBox) v).isChecked()) {
                checkStat.setChecked(true);
                Toast.makeText(MainActivity.this, "STAT",
                        Toast.LENGTH_SHORT).show();
                checkRoutine.setChecked(false);
                checkTat.setChecked(false);
            }
        }
    });
    checkRoutine.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            if (((CheckBox) v).isChecked()) {
                checkRoutine.setChecked(true);
                Toast.makeText(MainActivity.this, "ROUTINE",
                        Toast.LENGTH_SHORT).show();
                checkStat.setChecked(false);
                checkTat.setChecked(false);
            }
        }
    });
    checkTat.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            if (((CheckBox) v).isChecked()) {
                checkTat.setChecked(true);
                Toast.makeText(MainActivity.this, "TAT Effeciency",
                        Toast.LENGTH_SHORT).show();
                checkRoutine.setChecked(false);
                checkStat.setChecked(false);
            }
        }
    });

    // listView = (IndexableListView) findViewById(R.id.homelistView);
    listView = (ListView) findViewById(R.id.homelistView);
    listView.setTextFilterEnabled(true);
    listView.setFastScrollEnabled(true);
    listView.setFastScrollAlwaysVisible(true);
    objectAdapter = new EfficientAdapter(this);
    listView.setAdapter(objectAdapter);

    Button refreshButton = (Button) findViewById(R.id.refreshButton);
    refreshButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            // objectAdapter1 = new EfficientAdapter2(MainActivity.this);
            objectAdapter = new EfficientAdapter(MainActivity.this);// adapter
                                                                    // with
                                                                    // new
                                                                    // data
            listView.setAdapter(objectAdapter);

            Log.i("notifyDataSetChanged", "data updated");
            // objectAdapter1.notifyDataSetChanged();
            objectAdapter.notifyDataSetChanged();

        }
    });

}

@Override
public boolean onClose() {
    return false;
}

@Override
public boolean onQueryTextChange(String newText) {
    return false;
}

@Override
public boolean onQueryTextSubmit(String query) {
    return false;
}

}

EfficientAdapter.JAVA

 public class EfficientAdapter extends BaseAdapter implements SectionIndexer {

private String mSections = "#ABCDEFGHIJKLMNOPQRSTUVWXYZ";
ArrayList<Patient> patientListArray;

private LayoutInflater mInflater;
private Context context;
        ViewHolder holder;
public EfficientAdapter(Context context) {
    mInflater = LayoutInflater.from(context);
    this.context = context;

    String patientListJson = CountriesList.jsonData;
    JSONObject jssson;
    try {
        jssson = new JSONObject(patientListJson);
        patientListJson = jssson.getString("PostPatientDetailResult");
    } catch (JSONException e) {
        e.printStackTrace();
    }
    Gson gson = new Gson();
    JsonParser parser = new JsonParser();
    JsonArray Jarray = parser.parse(patientListJson).getAsJsonArray();
    patientListArray = new ArrayList<Patient>();
    for (JsonElement obj : Jarray) {
        Patient patientList = gson.fromJson(obj, Patient.class);
        patientListArray.add(patientList);
        Log.i("patientList", patientListJson);

    }
}

/**
 * sorting the patientListArray data
 */
public void sortMyData() {
    // sorting the patientListArray data
    Collections.sort(patientListArray, new Comparator<Object>() {
        @Override
        public int compare(Object o1, Object o2) {
            Patient p1 = (Patient) o1;
            Patient p2 = (Patient) o2;
            return p1.getName().compareToIgnoreCase(p2.getName());
        }

    });
}

public int getCount() {

    return patientListArray.size();
}

public Object getItem(int position) {

    return position;
}

public long getItemId(int position) {
    return position;
}

public View getView(int position, View convertView, ViewGroup parent) {


    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.homemplebrowview, null);
        holder = new ViewHolder();
        holder.text1 = (TextView) convertView.findViewById(R.id.name);
        holder.text2 = (TextView) convertView.findViewById(R.id.mrn);
        holder.text3 = (TextView) convertView.findViewById(R.id.date);
        holder.text4 = (TextView) convertView.findViewById(R.id.age);
        holder.text5 = (TextView) convertView.findViewById(R.id.gender);
        holder.text6 = (TextView) convertView.findViewById(R.id.wardno);
        holder.text7 = (TextView) convertView.findViewById(R.id.roomno);
        holder.text8 = (TextView) convertView.findViewById(R.id.bedno);
        holder.btnList = (Button) convertView.findViewById(R.id.listbutton);



        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.text1.setText(Util.formatN2H(patientListArray.get(position)
            .getName()));
    holder.text2.setText(patientListArray.get(position).getMrnNumber());
    holder.text3.setText(Util.formatN2H(patientListArray.get(position)
            .getRoom()));
    holder.text4.setText(Util.formatN2H(patientListArray.get(position)
            .getAge()));
    holder.text5.setText(Util.formatN2H(patientListArray.get(position)
            .getGender()));
    holder.text6.setText(Util.formatN2H(patientListArray.get(position)
            .getWard()));
    holder.text7.setText(Util.formatN2H(patientListArray.get(position)
            .getRoom()));
    holder.text8.setText(Util.formatN2H(patientListArray.get(position)
            .getBed()));
            holder.btnList.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {                   
                Toast.makeText(context, "STAT", Toast.LENGTH_SHORT).show();
                Intent next = new Intent(context, Home.class);
                Log.i("next23", "next");
                context.startActivity(next);
            }
        });

    return convertView;
}

static class ViewHolder {
    public Button btnList;
    public TextView text8;
    public TextView text7;
    public TextView text6;
    public TextView text5;
    public TextView text4;
    public TextView text1;
    public TextView text2;
    public TextView text3;
}

@Override
public void notifyDataSetChanged() {
    super.notifyDataSetChanged();
}

public int getPositionForSection(int section) {
    // sorting the patientListArray data
    sortMyData();
    // If there is no item for current section, previous section will be
    // selected
    for (int i = section; i >= 0; i--) {
        for (int j = 0; j < getCount(); j++) {
            if (i == 0) {
                // For numeric section
                for (int k = 0; k <= 9; k++) {
                    if (StringMatcher.match(
                            String.valueOf(patientListArray.get(j)
                                    .getName().charAt(0)),
                            String.valueOf(k)))
                        return j;
                }
            } else {
                if (StringMatcher.match(
                        String.valueOf(patientListArray.get(j).getName()
                                .charAt(0)),
                        String.valueOf(mSections.charAt(i))))
                    return j;
            }
        }
    }
    return 0;
}

public int getSectionForPosition(int position) {
    return 0;
}

public Object[] getSections() {
    String[] sections = new String[mSections.length()];
    for (int i = 0; i < mSections.length(); i++)
        sections[i] = String.valueOf(mSections.charAt(i));
    return sections;
}

 }

回答1:

In your Efficient adapter class declare ViewHolder holder outside getView method and do as MoshErsan said.

Also Change your

convertView = mInflater.inflate(R.layout.homemplebrowview, null);

to

convertView = mInflater.inflate(R.layout.homemplebrowview, parent,false);

回答2:

The problem is in onInterceptTouchEvent method. You are using IndexableListView from woozzu, and this class overrides onInterceptTouchEvent to return true. This means that IndexableListView always steal touch events from your child's views so it can provide it to IndexScroller. You can change this behavior if instead of returning true you enter this condition:

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    if (mScroller != null && mScroller.contains(ev.getX(), ev.getY()))
        return true;
    return super.onInterceptTouchEvent(ev);
}

This way only events meant to interact with IndexScroller will be consumed. Other events will be propagated to children's views, and your button will be clickable.

回答3:

in your adapter, just move

holder.btnList.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {                   
                Toast.makeText(context, "STAT", Toast.LENGTH_SHORT).show();
                Intent next = new Intent(context, Home.class);
                Log.i("next23", "next");
                context.startActivity(next);
            }
        });

just before return convertView; you need to set the listener every time the adapter returns a view.