Question

我想在用户点击列表时打开更多意图，但每次点击列表项时都会打开相同的活动

    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ListView;

    import java.util.ArrayList;

    public class McLarenActivity extends AppCompatActivity {


        @Override

        protected void onCreate(Bundle savedInstanceState) {


            super.onCreate(savedInstanceState);
            setContentView(R.layout.word_list);
    //this the arraylist and i want to open further activities when a user clicks on a single arraylist an activity about it opens but currently when i click the 1 and 2 list open the same activity opens up.

            final ArrayList<Word> words = new ArrayList<Word>();

            words.add(new Word("2017", "720 S", R.drawable.mclaren2017720s));
            words.add(new Word("2015", "675lt", R.drawable.mclaren2015675lt));
            words.add(new Word("2015", "P1 GTR", R.drawable.mclaren2015p1gtr));
            words.add(new Word("2013", "P1", R.drawable.mclaren2013p1));
            words.add(new Word("1994", "F1", R.drawable.mclaren1994f1));


            WordAdapter adapter = new WordAdapter(this, words);


            ListView listView = (ListView) findViewById(R.id.list);


            listView.setAdapter(adapter);


            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int position, long 1) {
                    // the word item clicked
                    Word word = words.get(0);
                    Intent i = new Intent(McLarenActivity.this, mclaren720s.class);
                    startActivity(i);
                }
            });

    //these are the set on clicker i have used but some how they are not working correctly
            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                    // the word item clicked
                    Word word = words.get(1);
                    Intent i = new Intent(McLarenActivity.this, mclaren675lt.class);
                    startActivity(i);
                }
            });

Answer 1

您正在设置项目单击侦听器两次。 ListView只能有一个项目单击侦听器。所以基本上第一项单击侦听器被替换为秒并且未被使用。

您应该只设置项目单击侦听器一次，并根据position（或可能id）值执行不同的操作。像这样的东西

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
        Word word = words.get(position); // I don't know why you need `word` variable, it's not used anywhere in your code
        if (position == 0) {
            Intent i = new Intent(McLarenActivity.this, mclaren720s.class);
            startActivity(i);
        } else if (position == 1) {
            Intent i = new Intent(McLarenActivity.this, mclaren675lt.class);
            startActivity(i);
        }
    });

每次单击其他列表项都会打开相同的活动

1 个答案: