我在一个有左箭头和右箭头按钮的 android 应用程序中有一个特定的视图。向左箭头位于屏幕的左边缘,右侧按钮位于右侧。当按下任一按钮时,居中文本视图中的文本应该会发生变化。就这些。我没有设置任何动画或任何东西。然而,在测试中,当任一按钮被按下时,两个按钮都会在各自的方向上移动一点,直到它们离开屏幕。这就像魔术一样。这是活动的代码:
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stat_page);
this.current = 1;
this.setStats();
}
public void setStats()
{
GameTable entry = new GameTable(this);
entry.open();
//Check for an empty table
if(entry.isEmpty())
{
entry.createRows();
}
//Retrieve data from the matching row
int[] info = entry.getStats(this.current);
//Present the data in the GUI
TextView title = (TextView) findViewById(R.id.statstitle);
TextView stats = (TextView) findViewById(R.id.statpresents);
title.setText(this.diffString());
title.setTextSize(16);
title.setTextColor(Color.BLACK);
String present = "High Score: " + info[0] + "\n" +
"Longest Time: " + ((int)info[1] / 1000) + " sec\n" +
"Total Adds: " + info[2] + "\n" +
"Total Subtracts: " + info[3] + "\n" +
"Total Products: " + info[4] + "\n" +
"Total Divides: " + info[5] + "\n" +
"Total Squared: " + info[6] + "\n" +
"Total Square Roots: " + info[7] + "\n";
stats.setText(present);
stats.setTextSize(15);
stats.setTextColor(Color.BLACK);
entry.close();
}
private String diffString()
{
if(this.current == 1)
{
return "Freshman Stats";
}
else if(this.current == 2)
{
return "Sophomore Stats";
}
else if(this.current == 3)
{
return "Junior Stats";
}
else
{
return "Senior Stats";
}
}
public void movel(View view)
{
this.current--;
if(this.current == 0)
{
this.current = 4;
}
this.setStats();
}
public void mover(View view)
{
this.current++;
if(this.current == 5)
{
this.current = 1;
}
this.setStats();
}
movel 和 mover 方法作用于左右按钮,但不移动它们。这是接口的xml文件:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/blackboard"
android:baselineAligned="true"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="3"
android:orientation="horizontal"
android:baselineAligned="false"
android:gravity="center_horizontal" >
<ImageButton
android:id="@+id/imageButtonl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/buttoninvisible"
android:src="@drawable/leftarrow"
android:onClick="movel" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="4"
android:baselineAligned="false"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1">
<TextView
android:id="@+id/statstitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/rounded2"
android:layout_gravity="center"
android:layout_centerInParent="true"
android:padding="10dp"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="3">
<TextView
android:id="@+id/statpresents"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/rounded2"
android:layout_gravity="center"
android:layout_centerHorizontal="true"
android:padding="10dp"/>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="3"
android:orientation="horizontal"
android:gravity="center_horizontal" >
<ImageButton
android:id="@+id/imageButtonr"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/buttoninvisible"
android:src="@drawable/rightarrow"
android:onClick="mover" />
</LinearLayout>
任何人都可以提供任何解释吗?