如何在新打开时敬酒点击的项目名称 activity

Question

当我点击列表项目时，我想打开一个新的 activity 并显示项目名称被点击。我尝试了很多，但点击的项目名称不是吐司，一个新的activity打开但不显示项目名称，我如何在新的打开activity中获取点击的项目名称？那我该怎么做呢？

lv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
    int arg2, long arg3) {
        // TODO Auto-generated method stub
        String strName = listitem.get(arg2).getOppid();

        Toast.makeText(Welcome.this, strName, Toast.LENGTH_LONG)
                .show();
        Intent intent = new Intent(getApplicationContext(), Second_activity.class);
        startActivity(intent);

    }
});

它成功地在同一个 activity 中烘烤项目名称，但我还想在新的 activity 中显示项目名称。

我想吐司在那一秒点击项目名称activity我试过这种方法但没能解决。

public class Second_activity extends Activity {

    ListView lv;
    ArrayList<Services>listitem;
    String title,name;

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

        Intent i = getIntent();
        name= i.getStringExtra("name");
        Toast.makeText(Second_activity.this, name, Toast.LENGTH_LONG).show();

Answer 1

您可以通过 Intent (intent.putExtra()) 或通过 EventBus 发送字符串，或将其放在 SharedPreferences 中。选择你喜欢的。

如果您不需要发送任何复杂的数据，Intent 会做得很好，只是一个简单的 string、int 之类的。
如果您需要在以下时间访问该数据，则 SharedPreferences 很有意义您下次访问您的应用程序，这意味着应该保存数据。
如果您希望发送您自己的自定义对象，请使用 EventBus 包含存储在其中的各种数据。

Answer 2

试试这个

Toast.makeText(getApplicationContext(), strName, Toast.LENGTH_LONG).show();

Answer 3

将name放入extras并传递给new activity。在新 activity 中从临时演员中获取名称并显示。

Answer 4

将此添加到您的代码中 Intent intent = new Intent(getApplicationContext(), Second_activity.class); intent.putStringExtra("name",strName);

Answer 5

lv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
    int arg2, long arg3) {
        // TODO Auto-generated method stub
        String strName = listitem.get(arg2).getName();

        Toast.makeText(Welcome.this, strName, Toast.LENGTH_LONG)
                .show();
        Intent intent = new Intent(this, Second_activity.class);
        intent.putExtra("string", strName);
        startActivity(intent);

    }
});

你的第二个activity

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

    Intent intent = getIntent();
    String name= intent.getExtras().getString("string");
    Toast.makeText(getApplicationContext(), name, Toast.LENGTH_LONG).show();
}

Answer 6

Bundle bundle = new Bundle();
String strName = listitem.get(arg2).getOppid();

bundle.putString("msg", strName);
Intent intent =newIntent(getApplicationContext(),Second_activity.class);
intent.putExtras(bundle);

然后在secondActivity的onCreate

String value = getIntent().getExtras().getString(key);
Toast.makeText(Welcome.this, value, Toast.LENGTH_LONG).show();

Answer 7

修改了您的代码

lv.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> arg0, View arg1,
                        int arg2, long arg3) {
                    // TODO Auto-generated method stub
                     String strName = listitem.get(arg2).getOppid();

                    Toast.makeText(Welcome.this, strName, Toast.LENGTH_LONG)
                    .show();
                    Intent intent = new Intent(getApplicationContext(), Second_activity.class);
          //add below line to take clicked item to next activity
          intent.putExtra("ITEMCLICKED",strName);
                    startActivity(intent);

                }
            });

在第二个activity的onCreate方法中添加下面的代码

  String mClickedItem;
//get the inten from the previous activity
Intent intent=getIntent();
//intent.hasExtra("ITEMCLICKED") to check intent has the value which we have set in previous activity
if(intent.hasExtra("ITEMCLICKED")){
mClickedItem = intent.getStringExtra("ITEMCLICKED");
 }
 Toast.makeText(Welcome.this, mClickedItem,Toast.LENGTH_LONG)
                    .show();

Answer 8

看看这个：

lv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
    int arg2, long arg3) {
        // TODO Auto-generated method stub
        String strName = listitem.get(arg2).getOppid();

        Toast.makeText(Welcome.this, strName, Toast.LENGTH_LONG)
                .show();
        Intent intent = new Intent(getApplicationContext(), Second_activity.class);
        intent.putExtra("name", strName);//add this line
        startActivity(intent);

    }
});

Answer 9

这是您的代码：

lv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1,
    int arg2, long arg3) {
        // TODO Auto-generated method stub
        String strName = listitem.get(arg2).getOppid();

        Toast.makeText(Welcome.this, strName, Toast.LENGTH_LONG).show();
        Intent intent = new Intent(getApplicationContext(), Second_activity.class);
            // you need to set the string here
        startActivity(intent);

    }
});

因此，您必须在第一个 activity:

上进行设置

intent.putExtra("item-name", strName);

在你的第二个 Activity:

 Intent intent = getIntent();
 String name = intent.getExtras().getString("item-name");
 Toast.makeText(getApplicationContext(), name, Toast.LENGTH_LONG).show();

此外，我建议您先检查一下您的额外费用：

Intent intent = getIntent();
Bundle extras  = intent.getExtras();
if(extras.containsKey("item-name")){
    //asking for your key and do something with it
}

如何在新打开时敬酒点击的项目名称 activity

How to toast clicked item name in new open activity

android

listview

listitem

你的第二个activity