Android实现竖着的滑动刻度尺效果，选择身高（竖向的）
这次是你想要的效果哦！高兴了吧？高兴地话，你不用给我打赏，分享到朋友圈，我就很高兴了。
群里有人问我要竖着的滑动尺效果，前天我贱贱地分享了一个横向的滑动效果，让大家模仿者，自己尝试着去改编一下，不知道有多少人弄出来了，尝试着去弄得请举手，好吧，我也不用说放下了，根本就没人举。我再说一句废话吧，努力去尝试，才会有进步，不要坐等着别人来帮助你，这样你会饿死的，因为很多人不会像我一样去给你分享。
我大声喊一句：盖茨（翠花），上代码。
效果如下：
效果图
第一步：activity_mian.xml布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >
<LinearLayout android:id="@+id/user_weight" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal" >
<LinearLayout android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:orientation="vertical" >
<TextView android:id="@+id/user_height_value" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:textColor="#000000" android:textSize="20sp" />
<ImageView android:id="@+id/userheight" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_margin="10dp" android:layout_weight="1" android:background="@null" android:contentDescription="@null" android:src="@drawable/my_self_girl" />
</LinearLayout>
<LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" >
<RelativeLayout android:id="@+id/v_ruler" android:layout_width="80dp" android:layout_height="fill_parent" android:background="@drawable/my_self_h_ruler" >
<ImageView android:layout_width="80dp" android:layout_height="2dp" android:layout_centerVertical="true" android:background="@null" android:contentDescription="@null" android:src="@drawable/rulerscale_vertical_selected" />
<ScrollView android:id="@+id/vruler" android:layout_width="100dp" android:layout_height="fill_parent" android:scrollbars="none" >
<LinearLayout android:id="@+id/vruler_layout" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="10dp" android:gravity="center_vertical" android:orientation="vertical" >
</LinearLayout>
</ScrollView>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>第二步：竖向空白刻度布局，blankvrulerunit.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginBottom="20dp" android:layout_marginTop="5dp" android:background="@null" android:orientation="vertical" >
<TextView android:id="@+id/vrulerunit" android:layout_width="50dp" android:layout_height="20dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="@null" android:textColor="#000000" android:textSize="14sp" />
</RelativeLayout>第三步：中间刻度尺布局，vrulerunit.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginBottom="20dp" android:layout_marginTop="5dp" android:orientation="vertical" >
<ImageView android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginRight="30dp" android:background="@null" android:contentDescription="@null" android:scaleType="fitXY" android:src="@drawable/rulerscale_vertical" />
<TextView android:id="@+id/vrulerunit" android:layout_width="50dp" android:layout_height="20dp" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:background="@null" android:textColor="#000000" android:textSize="14sp" />
</RelativeLayout>第四步：MainActivity.java主代码实现：
public class MainActivity extends Activity {
private ScrollView ruler;
private TextView user_height_value;
private LinearLayout rulerlayout;
private String height = "170";
@Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
}
@Override
protected void onResume() {
super.onResume();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
scroll();
}
}, 400);
}
private void scroll() {
ruler.smoothScrollTo(0, 1700);
}
protected void initViews() {
user_height_value = (TextView) findViewById(R.id.user_height_value);
user_height_value.setText("身高是: " + height + " CM");
ruler = (ScrollView) findViewById(R.id.vruler);
ruler.setOnTouchListener(new OnTouchListener() { @Override
public boolean onTouch(View v, MotionEvent event) { int action = event.getAction();
user_height_value.setText("身高是: "
+ String.valueOf((int) Math.ceil((ruler.getScrollY()) / 10))
+ " CM");
switch (action) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
new Handler().postDelayed(new Runnable() { @Override
public void run() {
user_height_value.setText("身高是: "
+ String.valueOf((int) Math.ceil((ruler
.getScrollY()) / 10)) + " CM");
}
}, 1000);
break;
}
return false;
}
});
rulerlayout = (LinearLayout) findViewById(R.id.vruler_layout); new Handler().postDelayed((new Runnable() { @Override
public void run() {
constructRuler();
}
}), 300);
}
private void constructRuler() {
int rulerHeight = ruler.getHeight();
View topview = (View) LayoutInflater.from(this).inflate(
R.layout.blankvrulerunit, null);
topview.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
rulerHeight / 2));
rulerlayout.addView(topview);
for (int i = 0; i < 25; i++) {
View view = (View) LayoutInflater.from(this).inflate(
R.layout.vrulerunit, null);
view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, 100));
TextView tv = (TextView) view.findViewById(R.id.vrulerunit);
tv.setText(String.valueOf(i * 10));
rulerlayout.addView(view);
}
View bottomview = (View) LayoutInflater.from(this).inflate(
R.layout.blankvrulerunit, null);
bottomview.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
rulerHeight / 2));
rulerlayout.addView(bottomview);
}
}索要源码的方式很简单，跟以前一样，在公众号(非著名程序员)里回复关键字“懒得做”即可获得，欢迎大家关注，转发和分享。
友情提示：
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