Question

目前，代码我只在该列表视图的索引0处显示数据（点击时的新活动） - 而不是我实际点击的项目。我想以某种方式更改我的代码，以便它可以显示索引n处的数据（n是我在列表视图中单击的项目）：

ResultsActivity.java

final ArrayList<String> searchResults = getValuesFromJSON(jsonResult);

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

    final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
            (this, android.R.layout.simple_list_item_1, searchResults);

    listView.setAdapter(arrayAdapter);

    //list items become clickable and open the movie detail page which displays the movie data of the specific movie
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Intent newActivity = new Intent(ResultsActivity.this, MoviePage.class);
            newActivity.putStringArrayListExtra("movie data", searchResults);
            startActivity(newActivity);
        }
    });
}

MoviePage.java

 ArrayList<String> searchResults = getIntent().getStringArrayListExtra("movie data");

    TextView t = (TextView)findViewById(R.id.textViewfinal);
    t.setText(searchResults.get(9));

Answer 1

只需在列表视图中设置onclick监听器，即可收听项目点击事件将其放入活动中的onCreate方法中：

 listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
//you can move the textview to a class variable if you want
      TextView t = (TextView)findViewById(R.id.textViewfinal);
        t.setText(searchResults.get(position));

      } 
    });

更新：您希望将该位置传递给下一个活动，就像将您的searchResults传递给MoviePage一样，只需这样做：

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Intent newActivity = new Intent(ResultsActivity.this, MoviePage.class);
        newActivity.putStringArrayListExtra("movie data", searchResults);
         newActivity.putExtra("position",position);//pass the position to the next activity
        startActivity(newActivity);
    } 
});

现在在MoviePage.java

ArrayList<String> searchResults = getIntent().getStringArrayListExtra("movie data");
 int position = getIntent().getIntExtra("position",0);
    TextView t = (TextView)findViewById(R.id.textViewfinal);
    t.setText(searchResults.get(position));

Answer 2

试试这个：

<强> ResultsActivity.java

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Intent newActivity = new Intent(ResultsActivity.this, MoviePage.class);
            newActivity.putExtra("movie data", searchResults.get(position));
            startActivity(newActivity);
        }
    });

<强> MoviePage.java

Bundle extras = getIntent().getExtras(); 

if (extras != null) {
    TextView t = (TextView)findViewById(R.id.textViewfinal);
    t.setText(extras.getString("movie data"));
}

我希望listview项目显示新活动中相关项目的数据

2 个答案: