我认为如果您已经手动打开它,那么跟踪抽屉内部的切换器会更清洁一些。这是我最终做的:
public class ManualActionBarDrawerToggle extends ActionBarDrawerToggle {
private static final float MENU_POSITION = 0f;
private static final float ARROW_POSITION = 1.0f;
private final int animationLength;
private final DrawerLayout drawerLayout;
private final Activity activity;
private State currentState;
private enum State { UP_ARROW, MENU }
public ManualActionBarDrawerToggle(Activity activity, DrawerLayout drawerLayout, int openDrawerContentDescriptionResource, int closeDrawerContentDescriptionResource) {
super(activity, drawerLayout, openDrawerContentDescriptionResource, closeDrawerContentDescriptionResource);
animationLength = activity.getResources().getInteger(android.R.integer.config_shortAnimTime);
this.drawerLayout = drawerLayout;
this.activity = activity;
currentState = State.MENU;
}
public void animateToBackArrow() {
ValueAnimator anim = ValueAnimator.ofFloat(MENU_POSITION, ARROW_POSITION);
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float slideOffset = (Float) valueAnimator.getAnimatedValue();
onDrawerSlide(drawerLayout, slideOffset);
}
});
anim.setInterpolator(new DecelerateInterpolator());
anim.setDuration(animationLength);
anim.start();
currentState = State.UP_ARROW;
}
public void animateToMenu() {
ValueAnimator anim = ValueAnimator.ofFloat(ARROW_POSITION, MENU_POSITION);
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float slideOffset = (Float) valueAnimator.getAnimatedValue();
onDrawerSlide(drawerLayout, slideOffset);
}
});
anim.setInterpolator(new DecelerateInterpolator());
anim.setDuration(animationLength);
anim.start();
currentState = State.MENU;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case (android.R.id.home):
if (currentState == State.UP_ARROW) {
activity.onBackPressed();
return true;
}
}
return super.onOptionsItemSelected(item);
}
}
确实,正如我所说的,我已经使用过它,但是它不像股票图标那么好看:)。 – MathieuMaree 2014-11-04 23:00:54
然后,为什么不切换到v7的ActionBarDrawerToggle? – 2014-11-04 23:02:46
嗯,我没有...?我想要的不是打开/关闭抽屉时的切换动画;这是相同的动画,但切换片段时。我希望一旦添加了片段,切换就像家庭/后退箭头一样操作 – MathieuMaree 2014-11-04 23:06:11