Question

我希望能够使用Intent类启动一个新活动。我知道如何使用以下代码行开始活动：

Intent myIntent = new Intent(v.getContext(), bylocationactivity.class);

startActivityForResult(myIntent, 0);

但是如何指定单击了哪个项目？所以当我点击“按位置”时，我可以启动bylocationactivity.class等等？

public class bonesactivity extends Activity 
{
    public void onCreate(Bundle savedInstanceState) 
    {
        ListView boneslist;
        String categorieslist[]={"Alphabetically","By Location","Specialty Tests"};
        super.onCreate(savedInstanceState);
        setContentView(R.layout.boneslayout);
        boneslist=(ListView)findViewById(R.id.boneslayout);
        boneslist.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , categorieslist));
        boneslist.setOnItemClickListener(new OnItemClickListener() 
        {
            public void onItemClick(AdapterView<?> parent, View view,int position, long id)
            {

            }
        });
    }      
}

Answer 1

@Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    Intent intent = null;
    switch(position) {
    case 1:
            intent = new Intent(getApplicationContext(), Activity2.class);
            startActivity(intent);
    break;
    case 2:
           intent = new Intent(getApplicationContext(), Activity3.class);
           startActivity(intent);
           break;
    default:
    }
    }

}）;

Answer 2

演示单个项目的代码单击多个按钮的监听器

您可以将其用作物品！

//点击所有6个按钮的监听器

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    //int clickedButtonIs;

    if (v == button1)
    {
        // call intent 1;
    }
    else if (v == button2)
    {
        // call intent 2;
    }
    else if (v == button3)
    {
        // call intent 3;
    }
    else if (v == button4)
    {
        // call intent 4;
    }
    else if (v == button5)
    {
        // call intent 5;
    }
    else if (v == button6)
    {
        // call intent 6;
    }
}

Answer 3

您可以使用position中的onItemClick参数从categoriesList数组中获取所需的字符串。所以：

 String category = categoriesList.get(position);

可能必须使categoriesList成为成员变量。

如何使用OnItemClickListener根据单击的项目启动新意图？

3 个答案: