[移动开发]android titlelayout自定义

bar_title.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout_titlebar"
    android:layout_width="match_parent"
    android:layout_height="40dp"
    android:background="@android:color/white">

    <ImageView
        android:id="@+id/iv_backward"
        android:layout_width="60dp"
        android:layout_height="match_parent"
        android:ellipsize="none"
        android:layout_gravity="center"
        android:singleLine="true"
        android:src="@drawable/arrow_back" />

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:ellipsize="marquee"
        android:gravity="center_horizontal|center"
        android:singleLine="true"
        android:text="标题栏"
        android:textColor="@android:color/black"
        android:textSize="20dp" />

    <TextView
        android:id="@+id/tv_forward"
        android:layout_width="60dp"
        android:layout_height="match_parent"
        android:layout_alignParentRight="true"
        android:ellipsize="end"
        android:gravity="center"
        android:paddingRight="5dp"
        android:singleLine="true"
        android:text="完成"
        android:textColor="@android:color/holo_red_light"
        android:textSize="18dp"/>

</LinearLayout>

TitleLayout

public class TitleLayout extends LinearLayout {
    private ImageView iv_backward;
    private TextView tv_title, tv_forward;

    public TitleLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        LinearLayout bar_title = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.bar_title, this);
        iv_backward = (ImageView) bar_title.findViewById(R.id.iv_backward);
        tv_title = (TextView) bar_title.findViewById(R.id.tv_title);
        tv_forward = (TextView) bar_title.findViewById(R.id.tv_forward);

        if(ActivityCollector.getCurrentActivity().getClass().equals(PersonInfo.class)){
            tv_forward.setText("保存");
            tv_title.setText("编辑资料");
        }
     }
        //设置监听器
        //如果点击back则结束活动
        iv_backward.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                ((Activity)getContext()).finish();
            }
        });
    }
    public TextView getTextView_forward(){
        return tv_forward;
    }
}

主活动onCreate里添加activity管理，不然titlelayout获得不了当前页面的活动

ActivityCollector.addActivity(this);添加进activity管理,Titlelaout才能获得该活动，添加标题时使用