Android 在按下电源按钮后清除 Activity 到 Activity 共享元素过渡退出动画
Android clears Activity to Activity shared element transition exit animation after pressing power button
我正在使用共享元素实现基本 Activity
过渡动画,从 RecyclerView
和 GridLayoutManager
到全屏详细信息 Activity
屏幕。动画在正常情况下运行良好。因此,当单击网格中的图像时,它会缩放到全屏图像并在退出时发生相反的情况。但是,如果在显示详细信息屏幕时按下电源按钮并 return 进入应用程序,Android 似乎会清除所有已注册的共享 element/transitions 因此全屏图像而不是缩小到网格它只是淡出。我尝试在两个 Activities
中注册 SharedElementCallbacks
,它们在没有按下电源按钮的情况下被正确调用,但在按下电源按钮后都没有被调用。如果有任何有助于解决此问题的建议,我将不胜感激。
这些是我添加代码以支持共享元素转换的地方:
public class MyViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.imageview) ImageView imageView;
private Item item;
public MyViewHolder(@NonNull View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
itemView.setTag(this);
itemView.setOnClickListener(onItemClickListener);
}
@Override
public void onBind(int position) {
super.onBind(position);
this.item = list.get(position);
imageView.setTransitionName(item.getId());
Glide.with(imageView.getContext().getApplicationContext())
.load(item.getUrl())
.centerCrop()
.apply(RequestOptions.placeholderOf(new ColorDrawable(Color.BLACK)))
.transition(DrawableTransitionOptions.withCrossFade())
.into(imageView);
}
public Item getItem() {
return item;
}
}
public class MyActivity extends AppCompatActivity {
...
public void setUp() {
...
adapter.setOnItemClickListener(view -> {
MyViewHolder viewHolder = (MyViewHolder)view.getTag();
View view = viewHolder.imageView;
Intent intent = new Intent(this, DetailsActivity.class);
intent.putExtra(Item.TAG, viewHolder.getItem());
ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(
this,
view,
view.getTransitionName());
startActivity(intent, options.toBundle());
});
...
}
}
public class DetailsActivity extends AppCompatActivity {
@BindView(R.id.imageview) ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_details);
supportPostponeEnterTransition();
Bundle bundle = getIntent().getExtras();
Item item = (Item) bundle.getSerializable(Item.TAG);
imageView.setTransitionName(item.getId());
final RequestListener<Drawable> requestListener = new RequestListener<Drawable>() {
@Override
public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
supportStartPostponedEnterTransition();
return false;
}
@Override
public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
supportStartPostponedEnterTransition();
return false;
}
};
Glide.with(getApplicationContext())
.load(item.getUrl())
.centerCrop()
.addListener(requestListener)
.into(imageView);
}
}
好吧,我相信这是一个从 API 29 in
开始的错误
- Activity-2-Activity
- Activity-片段
- 片段-Activity
共享元素转换。它在 API < 29 和 Fragment-Fragment 转换中工作正常。
从 ActivityA
过渡到 ActivityB
并从 [= 返回时13=] 到 ActivityA
一切正常,除非你在 ActivityB 并发送你的后台或锁定设备屏幕上的应用程序,然后你来到 ActivityB 打开的应用程序,现在按返回按钮或返回到 ActivityA 会丢失所有共享元素反向转换,即使您已覆盖 sharedElementReturnTransition
I found a simple hack to fix this issue which is making our
transitions to not work normally -
在将 ActivityB
发送到后台时,它会调用 activity 的 onPause() > onStop()
生命周期方法,现在在您的
onStop()
您可以检查以下条件,
如果 activity 未完成并且您的 API > 29,则将当前 Bundle 传递到 callActivityOnSaveInstanceState()
,
Kotlin Code
// override this method in your ActivityB
override fun onStop() {
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.Q && !isFinishing) {
Instrumentation().callActivityOnSaveInstanceState(this, Bundle())
}
super.onStop()
}
Java Code
// override this lifecycle method in your ActivityB
@Override
protected void onStop() {
if(Build.VERSION.SDK_INT == Build.VERSION_CODES.Q && !isFinishing()){
new Instrumentation().callActivityOnSaveInstanceState(this, new Bundle());
}
super.onStop();
}
希望对您有所帮助!
我正在使用共享元素实现基本 Activity
过渡动画,从 RecyclerView
和 GridLayoutManager
到全屏详细信息 Activity
屏幕。动画在正常情况下运行良好。因此,当单击网格中的图像时,它会缩放到全屏图像并在退出时发生相反的情况。但是,如果在显示详细信息屏幕时按下电源按钮并 return 进入应用程序,Android 似乎会清除所有已注册的共享 element/transitions 因此全屏图像而不是缩小到网格它只是淡出。我尝试在两个 Activities
中注册 SharedElementCallbacks
,它们在没有按下电源按钮的情况下被正确调用,但在按下电源按钮后都没有被调用。如果有任何有助于解决此问题的建议,我将不胜感激。
这些是我添加代码以支持共享元素转换的地方:
public class MyViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.imageview) ImageView imageView;
private Item item;
public MyViewHolder(@NonNull View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
itemView.setTag(this);
itemView.setOnClickListener(onItemClickListener);
}
@Override
public void onBind(int position) {
super.onBind(position);
this.item = list.get(position);
imageView.setTransitionName(item.getId());
Glide.with(imageView.getContext().getApplicationContext())
.load(item.getUrl())
.centerCrop()
.apply(RequestOptions.placeholderOf(new ColorDrawable(Color.BLACK)))
.transition(DrawableTransitionOptions.withCrossFade())
.into(imageView);
}
public Item getItem() {
return item;
}
}
public class MyActivity extends AppCompatActivity {
...
public void setUp() {
...
adapter.setOnItemClickListener(view -> {
MyViewHolder viewHolder = (MyViewHolder)view.getTag();
View view = viewHolder.imageView;
Intent intent = new Intent(this, DetailsActivity.class);
intent.putExtra(Item.TAG, viewHolder.getItem());
ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(
this,
view,
view.getTransitionName());
startActivity(intent, options.toBundle());
});
...
}
}
public class DetailsActivity extends AppCompatActivity {
@BindView(R.id.imageview) ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_details);
supportPostponeEnterTransition();
Bundle bundle = getIntent().getExtras();
Item item = (Item) bundle.getSerializable(Item.TAG);
imageView.setTransitionName(item.getId());
final RequestListener<Drawable> requestListener = new RequestListener<Drawable>() {
@Override
public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
supportStartPostponedEnterTransition();
return false;
}
@Override
public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
supportStartPostponedEnterTransition();
return false;
}
};
Glide.with(getApplicationContext())
.load(item.getUrl())
.centerCrop()
.addListener(requestListener)
.into(imageView);
}
}
好吧,我相信这是一个从 API 29 in
开始的错误- Activity-2-Activity
- Activity-片段
- 片段-Activity
共享元素转换。它在 API < 29 和 Fragment-Fragment 转换中工作正常。
从 ActivityA
过渡到 ActivityB
并从 [= 返回时13=] 到 ActivityA
一切正常,除非你在 ActivityB 并发送你的后台或锁定设备屏幕上的应用程序,然后你来到 ActivityB 打开的应用程序,现在按返回按钮或返回到 ActivityA 会丢失所有共享元素反向转换,即使您已覆盖 sharedElementReturnTransition
I found a simple hack to fix this issue which is making our transitions to not work normally -
在将 ActivityB
发送到后台时,它会调用 activity 的 onPause() > onStop()
生命周期方法,现在在您的
onStop()
您可以检查以下条件,
如果 activity 未完成并且您的 API > 29,则将当前 Bundle 传递到 callActivityOnSaveInstanceState()
,
Kotlin Code // override this method in your ActivityB
override fun onStop() {
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.Q && !isFinishing) {
Instrumentation().callActivityOnSaveInstanceState(this, Bundle())
}
super.onStop()
}
Java Code // override this lifecycle method in your ActivityB
@Override
protected void onStop() {
if(Build.VERSION.SDK_INT == Build.VERSION_CODES.Q && !isFinishing()){
new Instrumentation().callActivityOnSaveInstanceState(this, new Bundle());
}
super.onStop();
}
希望对您有所帮助!