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android中实现指针滑动的动态效果方法

2019年07月24日  | 移动技术网移动技术  | 我要评论

复制代码 代码如下:

<framelayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="#fff"
            android:paddingbottom="5dp"
            android:paddingleft="5dp"
            android:paddingright="2dp"
            >

            <imageview
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:src="@drawable/up_icon"
                android:layout_margintop="0dp"
                android:paddingtop="0dp" />

            <linearlayout
                android:layout_width="240dip"
                android:layout_height="wrap_content"
                android:layout_marginleft="5dp"
                android:layout_marginright="7dp"
                android:orientation="horizontal" >

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="优"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="良"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="中等"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="不健康"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="有毒害"
                    android:textsize="12sp" />
            </linearlayout>

           
            <linearlayout
                android:layout_width="240dip"
                android:layout_height="wrap_content"
                android:layout_marginleft="5dp"
                android:layout_marginright="7dp"
                android:layout_margintop="40dp"
                android:orientation="horizontal" >

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="center_horizontal"
                    android:text="80"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="center_horizontal"
                    android:text="120"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="center_horizontal"
                    android:text="160"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="center_horizontal"
                    android:text="200"
                    android:textsize="12sp" />

                <textview
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="center_horizontal"
                    android:text="400"
                    android:textsize="12sp" />
            </linearlayout>

            <imageview
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginleft="10dp"
                android:layout_margintop="10dp"
                android:src="@drawable/zhizhen"
                android:id="@+id/zhizhen"/>

            <imageview
                android:id="@+id/dengji_img"
                android:layout_width="250dip"
                android:layout_height="wrap_content"
                android:layout_margintop="25dp"
                android:src="@drawable/dengji_icon" />
        </framelayout>

上面这段代码实现的布局为

首先，因为指针有压着下面的滚动条，因此这是一个framelayout的布局。其次，要实现指针的匀速滚动，需要开启一个线程，在线程中能够实现利用循环，以及线程的休眠，通过控制指针所在图标的padding属性来实现滚动的动画效果

复制代码 代码如下:

handler myhandler =new handler(){

        @override
        public void handlemessage(message msg) {
            // todo auto-generated method stub
            super.handlemessage(msg);
            //对于c的更改和循环应该是在线程中跑，要不run仅仅执行一次，           
            zhizhen.setpadding(c, 0, 0, 0);
        }

       
    };
    class mythread extends thread{

        @override
        public void run() {
            //发送一个消息，通知主线程改变ui
         try {

             while(c<=input){
                 c=c+1;
                 this.sleep(10);
                 myhandler.sendemptymessage(0);                
             }

               
        } catch (interruptedexception e) {
            // todo auto-generated catch block
            e.printstacktrace();
        }

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