Android 如何在单击按钮时以文本格式保存listview的所有数据

希望这有帮助

 static String[] city = {"Indore","Bhopal","Mumbai","Pune","Delhi","Kolkata",
        "Hyderabad","Banglore","Chennai","Amritsar","jhalandhar"};

Button button;
ListView listView;

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

    button = (Button) findViewById(R.id.button);
    listView = (ListView) findViewById(R.id.lv);

    MyAdapter myadapter = new MyAdapter(getApplicationContext(),city);
    listView.setAdapter(myadapter);

SharedReferences.Editor edit=PreferenceManager.getDefaultSharedReferences（this.edit（）；
对于（int i=0；i

在您的按钮单击时编写此代码

SharedPreferences.Editor edit = PreferenceManager.getDefaultSharedPreferences(this).edit();
    for (int i = 0 ; i < items.size(); i++) {
        ListViewItem item = items.get(i);
        edit.putString(Integer.toString(i), item.elementOne + "," + item.elementTwo + "," + item.elementthree);
    }
    edit.commit();

---

你的listview看起来怎么样？很简单的城市名称列表@android_griezmann我已经编辑了问题@android_griezmann谢谢先生让我检查一下它是否工作谢谢你这么多先生它工作了非常感谢hoe先生将其保存为PDF格式欢迎，并用于创建PDF，这有点棘手！我无法理解如何转换为PDF格式@android_griezmann

SharedPreferences.Editor edit = PreferenceManager.getDefaultSharedPreferences(this).edit();
    for (int i = 0 ; i < items.size(); i++) {
        ListViewItem item = items.get(i);
        edit.putString(Integer.toString(i), item.elementOne + "," + item.elementTwo + "," + item.elementthree);
    }
    edit.commit();

try {
        File myFile = new File("/sdcard/mysdfile.txt");
        myFile.createNewFile();
        FileOutputStream fOut = new FileOutputStream(myFile);
        OutputStreamWriter myOutWriter =
                new OutputStreamWriter(fOut);
        for (int i = 0; i < city.length; i++) {
            myOutWriter.append(city[i] +"\n");    
        }

        myOutWriter.close();
        fOut.close();
        Toast.makeText(getBaseContext(),
                "Done writing SD 'mysdfile.txt'",
                Toast.LENGTH_SHORT).show();
    } catch (Exception e) {
        Toast.makeText(getBaseContext(), e.getMessage(),
                Toast.LENGTH_SHORT).show();
    }

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />