[Animation3.java]
public class Animation3 extends Activity implements AdapterView.OnItemSelectedListener {
private static final String[] INTERPOLATORS = {
"Accelerate", "Decelerate", "Accelerate/Decelerate",
"Anticipate", "Overshoot", "Anticipate/Overshoot",
"Bounce"
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animation_3);
Spinner s = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, INTERPOLATORS);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s.setAdapter(adapter);
s.setOnItemSelectedListener(this);
}
public void onItemSelected(AdapterView parent, View v, int position, long id) {
final View target = findViewById(R.id.target);
final View targetParent = (View) target.getParent();
Animation a = new TranslateAnimation(0.0f,
targetParent.getWidth() - target.getWidth() - targetParent.getPaddingLeft() -
targetParent.getPaddingRight(), 0.0f, 0.0f);
a.setDuration(1000);
a.setStartOffset(300);
a.setRepeatMode(Animation.RESTART);
a.setRepeatCount(Animation.INFINITE);
switch (position) {
case 0:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.accelerate_interpolator));
break;
case 1:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.decelerate_interpolator));
break;
case 2:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.accelerate_decelerate_interpolator));
break;
case 3:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.anticipate_interpolator));
break;
case 4:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.overshoot_interpolator));
break;
case 5:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.anticipate_overshoot_interpolator));
break;
case 6:
a.setInterpolator(AnimationUtils.loadInterpolator(this,
android.R.anim.bounce_interpolator));
break;
}
target.startAnimation(a);
}
public void onNothingSelected(AdapterView parent) {
}
[animation_3.xml]
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:padding="10dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:clipToPadding="false">
<TextView
android:id="@+id/target"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="26sp"
android:text="@string/animation_3_text"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:layout_marginBottom="5dip"
android:text="@string/animation_2_instructions" />
<Spinner
android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
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