Question

我正在尝试将android actionbar微调器自定义为类似google current应用程序的东西。基本上，只有'副标题'应该反映我从旋转器中选择的内容，而'标题'保持不变。我知道需要创建自定义微调器，我必须覆盖getView()和getDropDownView()方法。但我在这里非常困惑如何正确地覆盖这些方法。有些人可以在正确的方向上推动我。我希望我明白我的问题。

the image screenshot http://androidcowboy.com/wp-content/uploads/2012/12/google-currents-3a.jpg

以下是我的代码。

public class CustomSpinnerAdapter extends BaseAdapter {

private LayoutInflater inflater;

private final Context context;
private final String[] dropDown;
private final String mainText;
private final String subText;

public CustomSpinnerAdapter(Context context, 
        String mainText, String subText,String[] dropDown) {

    inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    this.mainText=mainText;
    this.subText=subText;
    this.context = context;
    this.dropDown=dropDown;
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public Object getItem(int position) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public long getItemId(int position) {
    // TODO Auto-generated method stub
    return 0;
}




@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub

    View actionBarView = inflater.inflate(R.layout.custom_spinner, null);
    TextView textView = (TextView) actionBarView
            .findViewById(R.id.custom_spinner_textview);
    textView.setText(mainText);
    return actionBarView;
}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {

    View dropDownView = inflater.inflate(R.layout.custom_spinner, null);
    TextView dropDownTextView = (TextView) dropDownView
            .findViewById(R.id.custom_spinner_dropdown_textview);

    dropDownTextView.setText(dropDown[position]);
    return dropDownView;

}
}

Answer 1

我解决了。

我的适配器类列表：

public class AdapterBaseMaps extends BaseAdapter {

Context context;
int layoutResourceId;
ArrayList<ObjectLayers> data;
LayoutInflater inflater;

public AdapterBaseMaps(Context context, int textViewResourceId,
        ArrayList<ObjectLayers> data) {
    // super(a, textViewResourceId, data);
    this.data = data;
    inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    this.context = context;
    this.layoutResourceId = textViewResourceId;

}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    View actionBarView = inflater.inflate(R.layout.ab_main_view, null);
    TextView title = (TextView) actionBarView
            .findViewById(R.id.ab_basemaps_title);
    TextView subtitle = (TextView) actionBarView
            .findViewById(R.id.ab_basemaps_subtitle);
    title.setText(context.getResources()
            .getString(R.string.label_cartravel));
    subtitle.setText(data.get(position).getLayerName());
    return actionBarView;

}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
    View actionBarDropDownView = inflater.inflate(
            R.layout.ab_dropdown_view, null);
    TextView dropDownTitle = (TextView) actionBarDropDownView
            .findViewById(R.id.ab_basemaps_dropdown_title);

    dropDownTitle.setText(data.get(position).getLayerName());

    return actionBarDropDownView;

}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return data.size();
}

@Override
public Object getItem(int position) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public long getItemId(int position) {
    // TODO Auto-generated method stub
    return 0;
}

}

ab_main_view.xml列表：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<TextView
    android:id="@+id/ab_basemaps_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView"
    android:textSize="20sp"
    android:textColor="@color/White" />

<TextView
    android:id="@+id/ab_basemaps_subtitle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/ab_basemaps_title"
    android:text="TextView"
    android:textColor="@color/White"
    android:textSize="13sp" />

</RelativeLayout>

ab_dropdown_view.xml列表：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<TextView
    android:id="@+id/ab_basemaps_dropdown_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="20sp"
    android:padding="5dp"
    android:textColor="@color/White" />

</RelativeLayout>

Answer 2

第一个答案很有帮助，但不需要Adapter子类。

在@ user1624587的答案中定义XML，然后在public boolean onCreateOptionsMenu(Menu menu)中引用它：

    ArrayAdapter<CharSequence> someAdapter = new
        ArrayAdapter<CharSequence>(context, R.layout.ab_main_view, 
        android.R.id.text1, getResources().getStringArray(R.array.some_array));


    someAdapter.setDropDownViewResource(R.layout.ab_dropdown);

    MenuItem item = menu.add("SomeTitle").setActionView(R.layout.some_spinner);
    item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); //or whatever

    someSpinner = (someSpinner) item.getActionView();
    someSpinner.setAdapter(someAdapter);
    ...etc

Actionbar微调器自定义

2 个答案: