java - Android ListView-为每个项目打开新 Activity

Question

您好，我正在尝试让我的 ListView 针对每个部分打开不同的 Activity 。截至目前，我可以打开一个 Activity ，但他们都打开相同的 Activity 。我需要知道如何改变它，例如:

item1 会打开activity1item2 将打开 activity2 等等。

任何帮助将不胜感激，这是我的代码(一些评论来 self 遵循的教程，对于我的经验不足深表歉意):

ListView listView;

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

    //get listview from xml
    listView = (ListView)findViewById(R.id.listView);

    //defined array to show in listview
    String[] values = new String[]{"About the App",
                                    "How to Use",
                                    "Build log",
                                    };
    //define a new context
    //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

    ArrayAdapter<String>adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, android.R.id.text1, values);

    //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);

            //show alert
            Toast.makeText(getApplicationContext(),
                    "Position:"+itemPosition+" ListItem:" + itemValue, Toast.LENGTH_LONG).show();*/

            Intent appInfo = new Intent(About.this, about_app.class);
                startActivity(appInfo);

        }
    });
}

Answer 1

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);

            //show alert
            Toast.makeText(getApplicationContext(),
                    "Position:"+itemPosition+" ListItem:" + itemValue, Toast.LENGTH_LONG).show();*/
            switch(itemPosition)    

            case 0 :Intent appInfo = new Intent(About.this, about_app.class);
                startActivity(appInfo);
             break;
            case 1 :Intent appInfo = new Intent(About.this, Activity1.class);
                startActivity(appInfo);
             break;
             case 2 :Intent appInfo = new Intent(About.this, Activity2.class);
                startActivity(appInfo);
             break;
        }
    });