用代码简单介绍下自定义控件的使用:
先看主activity:
public class customImView extends LinearLayout{
public customImView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.customView);
String text = a.getString(R.styleable.customView_customtextStr);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.test_lin, this, true);
Button btn = (Button)view.findViewById(R.id.btn2);
btn.setText(text);
}
}
里面的样式styleable 来自于attrs.xml
布局文件来自于xml文件 test_lin.xml:
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="haha1111"/>
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="haha2222"/>
主布局文件activity_main.xml如下:
xmlns:tools="http://schemas.android.com/tools"
xmlns:test="http://schemas.android.com/apk/res/com.lml.customview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
android:layout_width="match_parent"
android:layout_height="wrap_content"
test:customtextSize="100dp"
test:customtextStr="123啦啦啦"/>
注意这边的命名空间。