问:StacyM
在Android的开发过程中,我用的是Coursera类别,以下是我想要实现的静态效果图:
目前,我采用的代码是:
XML:
<Button
android:id="@+id/startbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/leftfoot"
android:layout_alignRight="@+id/leftfoot"
android:onClick="startRhythmandAnimation"
android:text="@string/start_button" />
Java:
public class Assignment3MainActivity extends Activity {
private View mMileTimeGoal;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_assignment3_main);
mMileTimeGoal = findViewById(R.id.miletimegoal);
}
public void startRhythmandAnimation () {
String MileTime = mMileTimeGoal.getContext().toString();
String[] time_array = MileTime.split(":");
int hours = Integer.parseInt(time_array[0]);
int minutes = Integer.parseInt(time_array[1]);
int seconds = Integer.parseInt(time_array[2]);
int duration = 3600 * hours + 60 * minutes + seconds;
int steps_per_second = 3;
int running_rate = duration * steps_per_second;
View rightfoot = findViewById(R.id.rightfoot);
View leftfoot = findViewById(R.id.leftfoot);
rightfoot.setVisibility(View.VISIBLE);
Animation anim = AnimationUtils.makeInChildBottomAnimation(this);
rightfoot.startAnimation(anim);
leftfoot.setVisibility(View.VISIBLE);
leftfoot.startAnimation(anim);
}
我应该采用什么算法,来完成左、右脚的淡入淡出的“运动”呢?需要设定一种循环运动的定时器吗?
原问题:Android - How can I make an animation of an image occur at a certain interval?
答:Nick Cardoso
我覺得,你可以採用以下程式碼:
Activity
/res/anim/foot.xml
這是我認為最直接的解決辦法,當然,你可以針對特定的需要,再完善以上的程式碼。