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我在同一布局上有一个使用复选框和提交按钮的列表视图。

现在我只能点击复选框，它什么都不做。我阅读了很多关于显示项目的教程，但其中大多数都是作为祝酒词出现的。我想要的是当我单击提交按钮时项目显示在新活动中。

这是代码CheckBoxListAdapter：

public class CheckboxListAdapter extends BaseAdapter implements OnClickListener {

private LayoutInflater inflator;

private List<SampleData> dataList;

public CheckboxListAdapter(LayoutInflater inflator) {
    super();
    this.inflator = inflator;

    dataList = new ArrayList<SampleData>();

    dataList.add(new SampleData("Teh Ais (130 cal)", false));
    dataList.add(new SampleData("Teh O Ais (130 cal)", false));
    dataList.add(new SampleData("Neslo Ais (170 cal)", false));
    dataList.add(new SampleData("Kopi Ais (130 cal)", false));
    dataList.add(new SampleData("Kopi O Ais (130 cal)", false));
    dataList.add(new SampleData("Jus buah (130 cal)", false));
    dataList.add(new SampleData("Limau ais (40 cal)", false));
    dataList.add(new SampleData("Air berkarbonat (120 cal)", false));

}

@Override
public int getCount() {
    return dataList.size();
}

@Override
public Object getItem(int position) {
    return dataList.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View view, ViewGroup viewGroup) {

    if (view == null) {
        view = inflator.inflate(R.layout.element_example, null);

        view.findViewById(R.id.checkBox1).setOnClickListener(this);
    }

    SampleData data = (SampleData) getItem(position);

    CheckBox cb = (CheckBox) view.findViewById(R.id.checkBox1);
    cb.setChecked(data.isSelected());
    cb.setTag(data);

    TextView tv = (TextView) view.findViewById(R.id.textView1);
    tv.setText(data.getName());

    return view;
}

@Override
public void onClick(View view) {
    SampleData data = (SampleData) view.getTag();
    data.setSelected(((CheckBox) view).isChecked());
}

}

的代码CheckboxListActivity：

public class CheckboxListActivity extends ListActivity {

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

    setContentView(R.layout.activity_checkbox);

    CheckboxListAdapter adapter = new CheckboxListAdapter(
            getLayoutInflater());

    getListView().setAdapter(adapter);
}

}

SampleData.java: _

public class SampleData {

private String name;

private boolean selected;

public SampleData(String name, boolean selected) {
    super();
    this.name = name;
    this.selected = selected;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public boolean isSelected() {
    return selected;
}

public void setSelected(boolean selected) {
    this.selected = selected;
}

}

列表视图的第一个 XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<ListView
    android:id="@android:id/list"
    android:layout_width="match_parent"
    android:layout_height="389dp"
    android:layout_weight="0.79" >
</ListView>

<Button
    android:id="@+id/btn_submit"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/btn_submit" />

</LinearLayout>

复选框的第二个 XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="5dp" >



<TextView
    android:id="@+id/textView1"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1" />

<CheckBox
    android:id="@+id/checkBox1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

</LinearLayout>
4

1 回答 1

0

当您开始下一个活动时，将所选项目传递给 Intent 对象。在下一个 Activity 中从 Intent 中检索所选项目并使用它。

例子

Intent intent = new Intent(getBaseContext(), NextActivity.class);
intent.putExtra("Selected_Item", selectedItemData);
startActivity(intent)

在下一个活动中执行以下操作

Intent intent = getIntent();
String selectedItem = intent.getStringExtra("Selected_Item")
于 2013-06-27T18:56:38.760 回答