自定义一个Activity的Titile,具体代码如下:
MainTabActivity:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.customer_title);
button1 = (Button)findViewById(R.id.customer_submit);
......
//下面监听button的Onclick事件报空指针异常?
button1.setOnClickListener(new Button.OnClickListener(){ @Override
public void onClick(View v) {
Toast.makeText(MainTabActivity.this, "订菜", Toast.LENGTH_SHORT);
}});
}customer_title.xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:fitsSystemWindows="true"> <Button
android:layout_width="50dp"
android:layout_height="30dp"
android="@+id/customer_submit"
android:text="提单"
android:layout_alignParentLeft="true"
android:textColor="#CC0000"
android:textSize="10dp" />
<TextView
android:id="@+id/customer_titles"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="#000000"
android:layout_weight="1"
android:text="no title"
android:textSize="8pt" /></RelativeLayout>很奇怪获取TextView的视图是可以的,但是获取Button就不成功????
MainTabActivity:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.customer_title);
button1 = (Button)findViewById(R.id.customer_submit);
......
//下面监听button的Onclick事件报空指针异常?
button1.setOnClickListener(new Button.OnClickListener(){ @Override
public void onClick(View v) {
Toast.makeText(MainTabActivity.this, "订菜", Toast.LENGTH_SHORT);
}});
}customer_title.xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:fitsSystemWindows="true"> <Button
android:layout_width="50dp"
android:layout_height="30dp"
android="@+id/customer_submit"
android:text="提单"
android:layout_alignParentLeft="true"
android:textColor="#CC0000"
android:textSize="10dp" />
<TextView
android:id="@+id/customer_titles"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="#000000"
android:layout_weight="1"
android:text="no title"
android:textSize="8pt" /></RelativeLayout>很奇怪获取TextView的视图是可以的,但是获取Button就不成功????
因为获取TextView是成功的
这是什么。。android里有这种语法吗?
你确定不是 android:id="="@+id/customer_submit"还是,我眼花了??