操作栏微调器自定义

问题描述

我正在尝试将 android actionbar spinner 自定义为类似于 google currents 应用程序的内容.基本上，只有字幕"应该反映我从微调器中选择的内容，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.但是我在这里对如何正确覆盖这些方法感到非常困惑.可以请一些人朝正确的方向轻推我.我希望我说清楚了我的问题.

I am trying to customise the android actionbar spinner to something that like the google currents application. Basically, only the 'subtitle' should reflect what i choose from the spinner while the 'title' remains the same. I understand that a custom spinner needs to be created and I have to override the getView() and getDropDownView() method. But I am very confused here on how to override these methods properly. Can some please nudge me in the right direction. I hope I made my question clear.

下面是我的代码.

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;

}
}

推荐答案

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 的列表:

Listing of ab_main_view.xml:

<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 的列表:

Listing of ab_dropdown_view.xml:

<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>

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