本文介绍了由CollapsingToolbarLayout不正确地调用requestLayout()的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个折叠的工具栏布局，其中包含图像，折叠时显示工具栏标题.我需要更改工具栏标题字体，因此在工具栏布局内添加了textview.现在，每当我折叠工具栏时，都会反复生成以下错误.
I have a collapsing toolbar layout which contains an image and on collapse shows the toolbar title. I needed to change the toolbar title font so I added a textview inside toolbar layout. Now I'm getting the following error generated repeatedly whenever I collapse the toolbar.
08-12 13:14:19.604 2263-2263/com.panoroma.admin W/View: requestLayout() improperly called by android.support.design.widget.CollapsingToolbarLayout{2d353cd6 V.ED.... ........ 0,0-1080,390 #7f0c0070 app:id/collapsing_toolbar} during second layout pass: posting in next frame
08-12 13:14:19.604 2263-2263/com.panoroma.admin W/View: requestLayout() improperly called by android.support.v7.widget.AppCompatTextView{1bb84b57 V.ED.... ........ 168,48-407,119 #7f0c0073 app:id/toolbar_title} during second layout pass: posting in next frame
我的布局...
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed|exitUntilCollapsed">
<ImageView
android:id="@+id/header"
android:layout_width="100dp"
android:layout_height="100dp"
android:adjustViewBounds="true"
android:layout_gravity="center"
android:scaleType="centerCrop"
android:layout_marginTop="15dp"
android:layout_marginBottom="15dp"
android:background="@drawable/dashboard80"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.5" />
<android.support.v7.widget.Toolbar
android:id="@+id/da_toolbar"
app:popupTheme="@style/AppTheme.PopupOverlay"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
app:layout_collapseMode="pin"
android:layout_height="?attr/actionBarSize">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="?attr/colorAccent"
android:id="@+id/toolbar_title"/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/rel_dash_icon"
app:layout_behavior="@string/appbar_scrolling_view_behavior" >
.........................
</ScrollView>
</android.support.design.widget.CoordinatorLayout>
java文件..
Typeface ubuntuC = Typeface.createFromAsset(getAssets(), "ubuntuC.ttf");
Toolbar toolbar = (Toolbar) findViewById(R.id.da_toolbar);
toolbar.setTitle("");
setSupportActionBar(toolbar);
toolbar_title = (TextView)toolbar.findViewById(R.id.toolbar_title);
toolbar_title.setTypeface(ubuntuC);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
getSupportActionBar().setHomeAsUpIndicator(getResources().getDrawable(R.drawable.abc_ic_ab_back_mtrl_am_alpha, null));
else
getSupportActionBar().setHomeAsUpIndicator(getResources().getDrawable(R.drawable.abc_ic_ab_back_mtrl_am_alpha));
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
final CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.appbar);
appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
boolean isShow = false;
int scrollRange = -1;
@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (scrollRange == -1) {
scrollRange = appBarLayout.getTotalScrollRange();
}
if (scrollRange + verticalOffset == 0) {
// collapsingToolbarLayout.setTitle("Dashboard");
toolbar_title.setText("Dashboard");
isShow = true;
} else if(isShow) {
// collapsingToolbarLayout.setTitle("");
toolbar_title.setText("");
isShow = false;
}
}
});
我只想要一个带有中心图像的工具栏，该工具栏在折叠时将显示标题.标题将具有自定义字体.现在，有更好的方法吗?
I just want a toolbar with a center image which on collapse will display the title. Title will have custom font. Now, is there a better way doing this?
推荐答案
下面的代码对我有用在AppBarLayout
Following piece of code worked for meadded post Runnable on AppBarLayout
mAppBar.addOnOffsetChangedListener(new AppBarStateChangeListener() {
@Override
public void onStateChanged(AppBarLayout appBarLayout, final int state, int done) {
mAppBar.post(new Runnable() {
@Override
public void run() {
if (state == COLLAPSED) {
mToolBarTitle.setText(model.getTitle());
} else if (state == EXPANDED || state == IDLE) {
mToolBarTitle.setText("");
}
}
});
}
});
这篇关于由CollapsingToolbarLayout不正确地调用requestLayout()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！