Question

我的listview和搜索框出现问题。搜索工作正常，除了它区分大小写的事实。但是，我的问题是，点击后立即开始活动。开始活动基于文本的位置。因此，如果我不进行任何研究，链接工作正常。然而，如果我研究具体细节，列表视图有效但链接错误，因为它们基于列表视图的初始位置而不是按类别排序。

    import greendroid.app.GDActivity;
import greendroid.widget.ActionBarItem;
import greendroid.widget.NormalActionBarItem;

import java.util.ArrayList;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class m_m_aeritalia extends GDActivity {
        EditText edittext;
        ListView listview;
        Button search;

        String[] text = { "(Lockheed) F-104S Starfighter",
                        "Aermecchi / EMBRAER AMX", "G-222" };

        int[] image = { R.drawable.tf1, R.drawable.tf7, R.drawable.ts26 };
        int textlength = 0;
        ArrayList<String> text_sort = new ArrayList<String>();
        ArrayList<Integer> image_sort = new ArrayList<Integer>();

        public void onCreate(Bundle savedInstanceState) {

                requestWindowFeature(Window.FEATURE_NO_TITLE);

                super.onCreate(savedInstanceState);
                setActionBarContentView(R.layout.m_listgeneral);

                addActionBarItem(
                                getActionBar().newActionBarItem(NormalActionBarItem.class)
                                                .setDrawable(R.drawable.ic_title_back),
                                R.id.action_bar_back);

                edittext = (EditText) findViewById(R.id.EditText01);
                listview = (ListView) findViewById(R.id.ListView01);
                listview.setAdapter(new MyCustomAdapter(text, image));

                listview.setClickable(true);
                listview.setOnItemClickListener(new OnItemClickListener() {
                        public void onItemClick(AdapterView<?> parent, View view,
                                        int position, long id) {
                                if ("(Lockheed) F-104S Starfighter".equals(text[position])) {
                                        // code specific to 2nd list item
                                        Intent myIntent = new Intent(view.getContext(),
                                                        mcomingsoon.class);
                                        startActivityForResult(myIntent, 0);
                                }

                                if ("Aermecchi / EMBRAER AMX".equals(text[position])) {
                                        // code specific to 2nd list item
                                        Intent myIntent = new Intent(view.getContext(),
                                                        mcomingsoon.class);
                                        startActivityForResult(myIntent, 0);
                                }

                                if ("G-222".equals(text[position])) {
                                        // code specific to 2nd list item
                                        Intent myIntent = new Intent(view.getContext(),
                                                        fa_f4.class);
                                        startActivityForResult(myIntent, 0);
                                }

                        }

                });

                edittext.addTextChangedListener(new TextWatcher() {

                        public void afterTextChanged(Editable s) {

                        }

                        public void beforeTextChanged(CharSequence s, int start, int count,
                                        int after) {

                        }

                        public void onTextChanged(CharSequence s, int start, int before,
                                        int count) {

                                textlength = edittext.getText().length();
                                text_sort.clear();
                                image_sort.clear();

                                for (int i = 0; i < text.length; i++) {
                                        if (textlength <= text[i].length()) {
                                                if (text[i].indexOf(edittext.getText().toString()) != -1) {
                                                        text_sort.add(text[i]);
                                                        image_sort.add(image[i]);
                                                }
                                        }
                                }

                                listview.setAdapter(new MyCustomAdapter(text_sort, image_sort));

                        }
                });
        }

        class MyCustomAdapter extends BaseAdapter {

                String[] data_text;
                int[] data_image;

                MyCustomAdapter() {

                }

                MyCustomAdapter(String[] text, int[] image) {
                        data_text = text;
                        data_image = image;
                }

                MyCustomAdapter(ArrayList<String> text, ArrayList<Integer> image) {

                        data_text = new String[text.size()];
                        data_image = new int[image.size()];

                        for (int i = 0; i < text.size(); i++) {
                                data_text[i] = text.get(i);
                                data_image[i] = image.get(i);
                        }

                }

                public int getCount() {
                        return data_text.length;
                }

                public String getItem(int position) {
                        return null;
                }

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

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

                        LayoutInflater inflater = getLayoutInflater();
                        View row;

                        row = inflater.inflate(R.layout.listview, parent, false);

                        TextView textview = (TextView) row.findViewById(R.id.TextView01);
                        ImageView imageview = (ImageView) row
                                        .findViewById(R.id.ImageView01);

                        textview.setText(data_text[position]);
                        imageview.setImageResource(data_image[position]);

                        return (row);

                }
        }

        @Override
        public boolean onHandleActionBarItemClick(ActionBarItem item, int position) {

                switch (item.getItemId()) {
                case R.id.action_bar_back:
                        startActivity(new Intent(this, mbymanufacturers.class));
                        break;

                }

                return true;

        }

希望我说清楚，有什么建议吗？

谢谢 Tiberio Bozotti

Answer 1

您不应该直接查询String数组，而是从Adapter获取该项。

试试这个......

创建一个自定义私有类来保存String和整数值对，例如：

private class DataPair { String text; int value; }

然后，不是使用MyCustomAdapter，而是创建DataPair对象的ArrayList并将其分配给ArrayAdapter，例如：

new ArrayAdapter<DataPair>(this, R.layout.ListView01, new ArrayList<DataPair>);

现在，要获取数据，您只需执行以下操作：

getItem(position).text

或

getItem(position).value

如果setOnItemClickListener使用：

((DataPair)listview.getAdapter().getItem(position)).text

使用搜索框从列表视图中启动活动

1 个答案: