将列表视图选定的文本传递给另一个活动

Posted 2023-04-19

【中文标题】将列表视图选定的文本传递给另一个活动

【英文标题】：Pass listview selected text to another activity

【发布时间】：2012-01-13 13:25:09

【问题描述】：

抱歉，伙计们无法正常工作，在 onclick 事件期间发生错误。我想将选定的文本传递回启动活动。我是新手，所以请放轻松:)

public class selectTee extends ListActivity

    String[] tees_list;
    String value = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        tees_list = getResources().getStringArray(R.array.tees_array);
        setListAdapter(new ArrayAdapter<String>(this, R.layout.list_view, tees_list));
        final ListView teelist = getListView();
        teelist.setChoiceMode(1);
        teelist.setTextFilterEnabled(false);
        teelist.setOnItemClickListener(new OnItemClickListener()

            public void onItemClick(AdapterView<?> teeAdapter, View arg1, int selectedInt, long selectedLong) 

                //Error occurs during the onclick event
                Intent data = new Intent();
                data.putExtra(value, selectedInt);
                setResult(RESULT_OK, data);
                finish();
            
        );
    

好的，我让它工作了，我更改了以下代码：

public void onActivityResult(int requestCode, int resultCode, Intent data)

            if (requestCode == request_Code) 
            if (resultCode == RESULT_OK)
                Button revisedButton = (Button) findViewById(R.id.button1);
                String btext = data.getData().toString(); 
                revisedButton.setText((CharSequence) btext);

            

            
        

以及返回活动

 public void onItemClick(AdapterView<?> teeAdapter, View arg1, int selectedInt, long selectedLong) 
            String selection  =((TextView) arg1).getText().toString();
            System.out.println(selection);
            Intent data = new Intent();
            Uri uri = Uri.parse(selection);
            System.out.println(uri);
            data.setData(uri);
            setResult(RESULT_OK, data);
            finish();
        



    );

【问题讨论】：

错误是什么。日志会有所帮助。

12-05 17:47:40.781: ERROR/androidRuntime(1310): java.lang.RuntimeException: 传递结果失败 ResultInfowho=null, request=1, result=-1, data= Intent cmp=com.prophecysoftware.GolfProphecy/.SetupNewCourse (has extras) 到活动 com.prophecysoftware.GolfProphecy/com.prophecysoftware.GolfProphecy.SetupNewCourse: android.content.res.Resources$NotFoundException: String resource ID # 0xffffffff

【参考方案1】：

使用

Intent intent = new Intent(getBaseContext(), YOUCLASS.class);
intent.putExtra("TEXT", selectedInt);
//startActivity(intent) if you want to start an activity when its clicked

【参考方案2】：

看起来你从来没有设置“值”，所以它仍然是空的。我认为这可能是你的问题。您可以在调用 putExtra 之前尝试设置该字符串值吗？

另外，从单击的视图中获取选定的文本。执行以下操作：

String textOfSelectedItem  =((TextView) arg1).getText().toString();