是否可以通过编程方式将xml属性transitionName
设置为Toolbar
标题,然后使用ActivityOptionsCompat
将其用于动画?
这就是我宣布Toolbar
:
Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
myToolbar.setTitle("title");
这是我的xml声明:
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/primary_color"
android:elevation="4dp"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
android:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
为了添加动画,我必须使用以下代码:
ActivityOptionsCompat options =
ActivityOptionsCompat.makeSceneTransitionAnimation(activity,
albumCoverImageView, // The view which starts the transition (Should be myToolbar title)
transitionName // The transitionName of the view
);
ActivityCompat.startActivity(activity, intent, options.toBundle());
如何将Toolbar
(TextView
?)标题传递给makeSceneTransitionAnimation
函数?
答案 0 :(得分:9)
您可以通过以下代码获取TextView
标题的Toolbar
实例并设置转换:
private Toolbar mToolbar;
private TextView mTextViewToolbarTitle;
@Override
protected void onCreated(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
mToolbar = (Toolbar) findViewById(R.id.your_toolbar_id);
setSupportActionBar(mToolbar);
mTextViewToolbarTitle = getTextViewTitle(mToolbar);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mTextViewTitle.setTransitionName(getString(R.string.your_transition_name));
}
}
在您的活动中复制此方法:
public static TextView getTextViewTitle(Toolbar toolbar){
TextView textViewTitle = null;
for(int i = 0; i<toolbar.getChildCount(); i++) {
View view = toolbar.getChildAt(i);
if(view instanceof TextView) {
textViewTitle = (TextView) view;
break;
}
}
return textViewTitle;
}
然后通过以下方式开始您的新活动:
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
startActivity(intent,
ActivityOptionsCompat.makeSceneTransitionAnimation(this,
mTextViewToolbarTitle,
getString(R.string.your_transition_name))
.toBundle());
} else {
startActivity(intent,
ActivityOptionsCompat.makeSceneTransitionAnimation(this).toBundle());
}
答案 1 :(得分:4)
是的,这是可能的:
扩展ViewCompat
的类可以调用setTransitionName(String name)
例如:
myToolbar.setTransitionName("ToolbarTransition");
更新似乎您特意尝试分享标题,以便我会执行以下操作:
MainActivity的示例xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context="com.divshark.toolbaranimation.MainActivity"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
<android.support.v7.widget.AppCompatTextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="@android:color/white"
android:text="Activity Title" />
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.AppCompatButton
android:id="@+id/btnNext"
android:text="Next"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
然后在您的Activity引用中查看该视图:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
final AppCompatTextView mTextView = (AppCompatTextView) mToolbar.findViewById(R.id.tv_title);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mTextView.setTransitionName("SimpleTransition");
}
AppCompatButton mBtnNext = (AppCompatButton) findViewById(R.id.btnNext);
mBtnNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent secondActivity = new Intent(MainActivity.this, SecondActivity.class);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(MainActivity.this, mTextView, mTextView.getTransitionName());
startActivity(secondActivity, options.toBundle());
} else {
startActivity(secondActivity);
}
}
});
}
}
然后在你的SecondActivity中:
public class SecondActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_activity);
AppCompatTextView mTextView = (AppCompatTextView) findViewById(R.id.tv_title);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mTextView.setTransitionName("SimpleTransition");
}
}
}
使用这个xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.AppCompatTextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:layout_centerInParent="true"
android:textColor="@android:color/black"
android:text="Activity Title" />
</RelativeLayout>
正如您所见,您可以使用ViewCompat
视图以编程方式调用setTransitionName(String name)
祝你好运,快乐的编码!