我有一個列表視圖。我想單擊每個列表項目並打開不同的活動。其實,我寫了代碼,但它不工作。我的編碼技能無法處理這個問題。如何用字符串和類對創建Hahmap,然後將其放入ArrayAdapter。任何人都可以給我看代碼嗎?如何創建一個列表視圖,以便點擊每個列表項目將打開不同的活動?
ListViewAcivity.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
public class ListViewActivity extends Activity {
ListView listView ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_screen_activity);
// Get ListView object from xml
listView = (ListView) findViewById(R.id.list);
// Defined Array values to show in ListView
HashMap<String, Class> hashMap=new HashMap<String, Class>();
hashMap.put("A Function", MActivity.class);
hashMap.put("B Function",AActivity.class);
hashMap.put("c Function",XActivity.class);
hashMap.put("D Function",ZActivity.class);
hashMap.put("E Function", PActivity.class);
hashMap.put("F Function", QActivity.class);
// Define a new Adapter
// First parameter - Context
// Second parameter - Layout for the row
// Third parameter - ID of the TextView to which the data is written
// Forth - the Array of data
//錯誤是在這裏...... //此構造函數不能得到解決。 //我不知道如何使用// String,Class對和Array Adapter。
ArrayAdapter<HashMap<String,Class>> adapter = new ArrayAdapter<HashMap<String,Class>>(this, android.R.layout.simple_list_item_1, android.R.id.text1, hashMap);
// Assign adapter to ListView
listView.setAdapter(adapter);
// ListView Item Click Listener
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
int itemPosition = position;
// ListView Clicked item value
String itemValue = (String) listView.getItemAtPosition(position);
switch(itemPosition){
case 0: Intent newActivity = new Intent(ListViewActivity.this, MActivity.class);
startActivity(newActivity);
break;
case 1: Intent newActivity1 = new Intent(ListViewActivity.this, AActivity.class);
startActivity(newActivity1);
break;
case 2: Intent newActivity2 = new Intent(ListViewActivity.this, XActivity.class);
startActivity(newActivity2);
break;
case 3: Intent newActivity3 = new Intent(ListViewActivity.this, ZActivity.class);
startActivity(newActivity3);
break;
case 4: Intent newActivity4 = new Intent(ListViewActivity.this, PActivity.class);
startActivity(newActivity4);
break;
case 5: Intent newActivity5 = new Intent(ListViewActivity.this, QActivity.class);
startActivity(newActivity5);
break;
}
}
@SuppressWarnings("unused")
public void onClick(View v){
};
});}
}
main_screen_Activity.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView>
</LinearLayout>
感謝您的澄清。現在,我明白了。我正在修復它。再次感謝。 – SOURAV
當然,如果它給你你正在尋找的東西,隨時接受我的答案。 – GhostCat