自定义控件之--组合控件（titlebar）

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rl_top"
    android:layout_width="fill_parent"
    android:layout_height="@dimen/top_height"
    android:background="#f8f8f8" >
    <Button
        android:id="@+id/btn_top_back"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_centerVertical="true"
        android:gravity="center"
        android:background="@drawable/btn_top_back"
        android:textSize="20sp" />
    <TextView
        android:id="@+id/tv_top_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:text="@string/app_name"
        android:textColor="@color/black"
        android:textSize="20sp" />
    <Button
        android:id="@+id/btn_top_right"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_marginRight="@dimen/image_corner_radius"
        android:background="@null"
        android:gravity="center"
        android:textColor="@drawable/btn_top_right_selector"
        android:textSize="16sp" />
    <TextView
        android:layout_width="fill_parent"
        android:layout_alignParentBottom="true"
        android:layout_height="1dp"
        android:background="@color/gray" />
</RelativeLayout>

public class TitleView extends FrameLayout {
    private Button btn_top_back;
    private TextView tv_top_title;
    private Button btn_top_right;
    public TitleView(Context context, AttributeSet attrs) {
        super(context, attrs);
        LayoutInflater.from(context).inflate(R.layout.common_top, this);
        btn_top_back = (Button) findViewById(R.id.btn_top_back);
        tv_top_title = (TextView) findViewById(R.id.tv_top_title);
        btn_top_right = (Button) findViewById(R.id.btn_top_right);
    }
    public void setvisible(int left,int middle,int right){
        btn_top_back.setVisibility(left);
        tv_top_title.setVisibility(middle);
        btn_top_right.setVisibility(right);
    }
    public void setTitle(String title){
        tv_top_title.setText(title);
    }
    public void setLeftOnclickListener(OnClickListener onClickListener){
        btn_top_back.setOnClickListener(onClickListener);
    }
    public void setRightOnclickListener(OnClickListener onClickListener){
        btn_top_right.setOnClickListener(onClickListener);
    }
    
    public void setRightText(String text){
        btn_top_right.setText(text);
    }
}