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Android Action Bar 自定义View

孤风一剑 6月 01, 2013 410 0

接着上一篇Action Bar 加入Back键, 在Action Bar中加入自定义View. 依然先看效果:

actionbar自定义view的布局文件action_bar.xml

<?xml version=”1.0″ encoding=”utf-8″?>
<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”
android:layout_width=”wrap_content”
android:layout_height=”match_parent”
android:gravity=”center_vertical”
android:orientation=”horizontal”>
<TextView
android:id=”@+id/action_bar_title”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:textColor=”#EEA9B8″
android:text=”@string/action_bar_title” />
<Spinner
android:id=”@+id/action_bar_spinner”
android:layout_width=”wrap_content”
android:layout_height=”match_parent” >
</Spinner>
</LinearLayout>

Spinner Item的布局, 借用了之前抽屉导航Item的布局drawer_item.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:gravity=”center_vertical”
android:orientation=”horizontal” >
<ImageView
android:id=”@+id/drawer_img”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”/>
<TextView
android:id=”@+id/drawer_title”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”/>
</LinearLayout>

布局准备好了, 在Activity里面写一些.

首先是onCreate()方法里面准备一下.

/** action_bar添加自定义view */
View actionbarLayout = LayoutInflater.from(this).inflate(R.layout.action_bar, null);
mActionbarSpinne = (Spinner) actionbarLayout.findViewById(R.id.action_bar_spinner);
//setAdapter可以根据具体情况, 此处不必深究.
mActionbarSpinne.setAdapter(new SimpleAdapter(this,
getDrawerItems(true), R.layout.drawer_item, new String[] {
“drawer_img”, “drawer_title” }, new int[] {
R.id.drawer_img, R.id.drawer_title }));
mActionbarSpinne.setOnItemSelectedListener(new SpinnerItemSelectedListener());
//使自定义的普通View能在title栏显示, actionBar.setCustomView能起作用.
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setCustomView(actionbarLayout);

然后是

/**
* 监听action_bar的spinner item点击事件
*/
private class SpinnerItemSelectedListener implements OnItemSelectedListener {
@Override
public void onItemSelected(AdapterView<?> arg0, View view, int position,
long arg3) {
selectItem(view, position, MESSAGE_SPINNER_ITEM);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {}
}

Listener的selectItem()细节如下

if (messageId == MESSAGE_SPINNER_ITEM) {
if (position != 0) {
TextView title = (TextView) view.findViewById(R.id.drawer_title);
String cityName = title.getText().toString();
this.cityInput.setText(cityName);
}
}

至此, 可以根据具体情况在Action bar上面自定义View

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Action Bar android 自定义View