使用协调者布局CoordinatorLayout遇到难题了
在博客看过很多人写的CoordinatorLayout的Demo,但是我想要的效果是让toolbar的title不跟随滑动而变化,使他一直保持在顶部居中,但不知该如何处理,希望大神能只只招,在下感激不尽!
下面是博客中的图片效果!(让toolbar的title不滑动)
再贴上我的demo代码:
布局文件:
<?xml version="1.0" encoding="utf-8"?>
<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:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsingtoolbarlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="@+id/iv_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="@drawable/header"
app:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="24dp">
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
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.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="16dp"
android:layout_marginLeft="10dp"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
app:contentPadding="10dp"
app:cardElevation="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="CardView"
android:textAppearance="@style/TextAppearance.AppCompat.Title"/>
<TextView
android:id="@+id/tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#000"
android:textSize="20dp"
android:text="000"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</FrameLayout>
activity:
package com.jjq.coordinatorlayout;
import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
private ArrayList<String> mData;
private LinearLayout mLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
}
private void initData() {
mData = new ArrayList<>();
for (int i = 1; i < 50; i++) {
mData.add(" 第" + i + "个item");
}
mLayout.removeAllViews();
for (int i = 0; i < mData.size(); i++) {
View view = View.inflate(MainActivity.this, R.layout.item_cardview, null);
((TextView) view.findViewById(R.id.tv)).setText(mData.get(i));
//动态添加 子View
mLayout.addView(view, i);
}
}
private void initView() {
mToolbar = (Toolbar) findViewById(R.id.toolbar);
mLayout = (LinearLayout) findViewById(R.id.linearLayout);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
CollapsingToolbarLayout toolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsingtoolbarlayout);
toolbarLayout.setTitle("我才是标题");
}
}