Question

我有这个代码： public class Main扩展Activity {

GridView gridView;

static final String[] numbers = new String[] { "1", "2", "3", "4", "5",
        "6", "7" };

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.grid);

    gridView = (GridView) findViewById(R.id.grid1);

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

    gridView.setAdapter(adapter);

    gridView.setOnItemClickListener(new OnItemClickListener() {
        @Override
         public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
        // TODO Auto-generated method stub



           Intent i = new Intent(getApplicationContext(),Activity1.class);
           startActivity(i);


        }
    });
}

我希望当我点击1时转到activity1，当我点击2转到activity2等等。

甚至可能吗？

Answer 1

是的可能

将您的活动名称放在String数组中

String[] values = new String[] { "Activity1", "Activtiy2", "Activity3" };

然后在onItemClick

String val = values[arg2]; // arg2 is the index of item
Class ourClass  = Class.forName("yourpackagename."+val);
Intent intent = new Intent(ActivityName.this,ourClass);
startActivity(intent);

Answer 2

感谢Raghunandan，我设法解决了这个问题：

String val = activities[arg2]; // arg2 is the index of item
            Class ourClass = null;
            try {
                 ourClass  = Class.forName("com.example.challenge."+val);
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            Intent intent = new Intent(Day02.this,ourClass);
            startActivity(intent);

        }

GridView onclick到一个新活动

2 个答案: