android - 如何使 ListView (已创建)可点击(Android)？

Question

我制作了一个列表，现在我希望当用户单击一个项目时，它会打开一个显示 PKMN 数据的新屏幕。这是我的代码:

关东类

public class Kanto extends ActionBarActivity {

//fasendu listaa = making list
ListView listView; //criandu var = making variable
String[] pokemonsKanto = {
        "#1 Bulbasaur", "#2 Ivysaur", "#3 Venusaur"
}; //lista = list

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_kanto);

    //continuandu a lista = the other part to the list work
    listView = (ListView) findViewById(R.id.listView);
    ArrayAdapter<String> array = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, pokemonsKanto);
    listView.setAdapter(array);
    //lista cabada = finished
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.kanto, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    return id == R.id.action_settings || super.onOptionsItemSelected(item);
}

activity_kanto.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".Kanto">

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"></ListView>

我该怎么做？抱歉，我是个新手。

Answer 1

现在您只需为您的 ListView 设置一个 onItemClickListener，如下所示:

listView.setOnItemClickListener(new AdapterView.OnItemClickListener()
    {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id)
        {
            //create an Intent to your new `Activity` with PKMN data
            Intent pkmnActivityIntent = new Intent(Kanto.this, YourPKMNActivity.class);

            //pass your pkmn number and name (from your `String` array) in the `Intent`, so it can be shown in the new `Activity`
            pkmnActivityIntent.putExtra("name",pokemonsKanto[position] );
            //start your new Activity
            startActivity(pkmnActivityIntent );
        }
    });

当用户单击列表中的项目时，将激活此监听器。您可以在 listview.setAdapter() 方法之后立即设置它。

编辑:不要忘记在 manifest.xml 文件中声明新的 Activity。然后在您的新 Activity 中，使用以下命令获取 pkmn 名称:

String pkmnName = getIntent().getStringExtra("name");

现在您可以在 TextView 或其他内容中显示您的 pkmnName。