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ViewPage 联动效果自带角标
hackernew
发布于 2021-3-1 16:50
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文章目录
1. 简介
2. 要点
2.1 角标如何布局
2.2 如何与Indicator实现联动
3. 实现
3.1 布局
3.2 导航栏
3.3 导航栏与ViewPager联动
3.4 tab切换效果
4. 代码
5. 参考
1. 简介
常常羡慕于别人分享的自定义ViewPager联动效果。近期项目中用到联动效果，找来一个不错的框架用到了项目中。发现有几个问题：一是难以适应自己项目的设计风格；二是适应自己项目的交互比较麻烦；三是不知所以然导致维护和修改困难。于是决定自己实现。
下图是我们的实现目标：
2. 要点
2.1 角标如何布局
因为需要在每一个导航的 tab 右上角加上角标。所以需要写好角标的布局。因为需要让角标始终在文字的右上角，于是我就想到了 RelativeLayout 相对布局，它可以设置角标的相对位置，非常适合现在这个场景（当然 ConstraintLauout 也可以）。布局代码如下示例：
layout/layout_tab_cell_num.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:id="@+id/rl_tab_cell"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="2dp"
android:paddingRight="2dp">
<TextView
android:id="@+id/tv_tab_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="报送"
android:textColor="#ffffff"
android:textSize="16dp"
android:alpha="0.6"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
/>
<TextView
android:id="@+id/tv_msg_num"
android:layout_width="wrap_content"
android:layout_height="16dp"
android:minWidth="16dp"
android:background="@drawable/shape_tab_msg_bg_red"
android:layout_gravity="center"
android:visibility="gone"
tools:visibility="visible"
android:paddingLeft="4dp"
android:paddingRight="4dp"
android:paddingBottom="0.5dp"
android:gravity="center"
android:lines="1"
android:maxLines="1"
android:textStyle="bold"
android:text="99"
android:textSize="10dp"
android:textColor="@color/color_white"
android:layout_toRightOf="@id/tv_tab_name"
android:layout_above="@id/tv_tab_name"
android:layout_marginLeft="-14dp"
android:layout_marginBottom="-12dp"
/>
<TextView
android:id="@+id/tv_red_dot"
android:layout_width="8dp"
android:layout_height="8dp"
android:background="@drawable/shape_tab_msg_bg_red"
android:layout_gravity="center"
android:visibility="gone"
tools:visibility="gone"
android:layout_toRightOf="@id/tv_tab_name"
android:layout_above="@id/tv_tab_name"
android:layout_marginLeft="-12dp"
android:layout_marginBottom="-8dp"
/>
</RelativeLayout>
上面布局代码中，通过
android:layout_toRightOf="@id/tv_tab_name"
android:layout_above="@id/tv_tab_name"
控制角标数字或角标红点的位置，通过
android:layout_marginLeft="-12dp"
android:layout_marginBottom="-8dp"
控制角标向 tab 文字内部缩进（相对于文字向左向下缩进）。
drawable/shape_tab_msg_bg_red.xml 的布局如下，common：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<!-- 内部颜色 -->
<solid android:color="@color/color_red" />
<!-- 边缘线条颜色 -->
<stroke
android:width="1dp"
android:color="@color/common_color" />
<!-- 圆角的幅度 -->
<corners android:radius="100dp" />
</shape>
注意： 边缘线条颜色 最好 与背景色一致 。
Tab 切换需要一个指示器，用于明确指示我们处在那个页面，我们需要让 ViewPager 的页面和 Tab样式和指示器一一对应。
我们可以使用动画，但是有麻烦，如果在页面切换时使用动画去实现，我们很难保证指示器的动画能与 ViewPager 的页面切换节奏保持一致。节奏不一致，就会不流畅。
怎么办呢？我注意到 ViewPager 可以添加一个监听：addOnPageChangeListener(OnPageChangeListener)。
onPageChangeListener 的源码如下：
/**
* Callback interface for responding to changing state of the selected page.
*/
public interface OnPageChangeListener {
/**
* This method will be invoked when the current page is scrolled, either as part
* of a programmatically initiated smooth scroll or a user initiated touch scroll.
*
* @param position Position index of the first page currently being displayed.
* Page position+1 will be visible if positionOffset is nonzero.
* @param positionOffset Value from [0, 1) indicating the offset from the page at position.
* @param positionOffsetPixels Value in pixels indicating the offset from position.
*/
void onPageScrolled(int position, float positionOffset, int positionOffsetPixels);
/**
* This method will be invoked when a new page becomes selected. Animation is not
* necessarily complete.
*
* @param position Position index of the new selected page.
*/
void onPageSelected(int position);
/**
* Called when the scroll state changes. Useful for discovering when the user
* begins dragging, when the pager is automatically settling to the current page,
* or when it is fully stopped/idle.
*
* @param state The new scroll state.
* @see ViewPager#SCROLL_STATE_IDLE
* @see ViewPager#SCROLL_STATE_DRAGGING
* @see ViewPager#SCROLL_STATE_SETTLING
*/
void onPageScrollStateChanged(int state);
}
onPageSelected 和 onPageScrollStateChanged 我们应该很熟悉了，
onPageSelected 在新页面被选择时会被调用，动画未必完成；
onPageScrollStateChanged 在当滚动状态改变时调用，有三种状态。
还有一个方法比较少用到：
onPageScrolled 在当前页面被滚动时调用，有三个参数：
- position
翻译：当前正在显示的第一页的位置索引。如果 positionOffset 不为 0，position+1 页会显示。
事实上：当页面正在滚动时，即滚动未完成，postion 表示 左边页面的下标，无论是左滑还是右滑，postion+1 即是右边页面的下标。 - positionOffset
从[0, 1)的值，表示页面的偏移量。 - positionOffsetPixels
偏移量的 pixel 值。
通过 onPageScrolled 方法的 position 和 positionOffset 我们可以算出 指示器（Indicator View）
的位置。如下所示：
图为指示器中心点位置计算：
int dist = (leftCell.getWidth() + rightCell.getWidth()) / 2;
float indicatorCenterX = leftCell.getLeft() + leftCell.getWidth() / 2 + dist * positionOffset;
int translationX = (int) (indicatorCenterX - mIndicatorView.getWidth() / 2);
mIndicatorView.setTranslationX(translationX);
positionOffset 是随着页面的切换而不断变化的，因此可以，通过setTranslationX 设置 indicatorView 的位移量 translationX 来控制 indicatorView 的移动。
3. 实现
3.1 布局
导航栏 tab 的布局上面已经给出，下面是导航、指示器、ViewPager的布局：
layout/activity_nav.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".nav.NavActivity">
<HorizontalScrollView
android:id="@+id/hsv_nav_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/common_color"
android:scrollbars="none">
<FrameLayout
android:id="@+id/fl_nav_frame"
android:layout_width="wrap_content"
android:layout_height="44dp">
<LinearLayout
android:id="@+id/ll_tab_group"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal">
</LinearLayout>
<View
android:id="@+id/indicator_view"
android:layout_width="18dp"
android:layout_height="2dp"
android:background="@color/color_white"
android:layout_gravity="bottom"
android:layout_marginBottom="4dp"/>
</FrameLayout>
</HorizontalScrollView>
<android.support.v4.view.ViewPager
android:id="@+id/vp_content"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
布局很简单，如果tab数量固定且有限，不需要水平滚动条，可以把水平滚动条去掉，在@+id/ll_tab_group 中，根据上面角标布局，写自己的 tab 组合。
3.2 导航栏
第一步：准备数据
private void initData() {
mFuncEntityList.add(new FuncEntity("关注", 0));
mFuncEntityList.add(new FuncEntity("推荐", 1));
mFuncEntityList.add(new FuncEntity("视频", 2));
mFuncEntityList.add(new FuncEntity("热点", 3));
mFuncEntityList.add(new FuncEntity("直播", 4));
mFuncEntityList.add(new FuncEntity("精品课", 5));
mFuncEntityList.add(new FuncEntity("娱乐", 6));
mFuncEntityList.add(new FuncEntity("科技", 7));
mFuncEntityList.add(new FuncEntity("懂车帝", 8));
mFuncEntityList.add(new FuncEntity("财经", 9));
mFuncEntityList.add(new FuncEntity("国际", 10));
mFuncEntityList.add(new FuncEntity("体育", 11));
mFuncEntityList.add(new FuncEntity("问答", 12));
}
数据类如下
import java.io.Serializable;
public class FuncEntity implements Serializable {
/**
* funName : 关注
* id : 2
*/
private String funName;
private int id;
public FuncEntity() {
}
public FuncEntity(String funName, int id) {
this.funName = funName;
this.id = id;
}
public String getFunName() {
return funName;
}
public void setFunName(String funName) {
this.funName = funName;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
第二步：初始化导航栏，为 ViewPager 设置适配器
@Override
public void initView() {
mFragmentManager = getSupportFragmentManager();
//find views
mHsvNavBar = (HorizontalScrollView) findViewById(R.id.hsv_nav_bar);
mFlNavFrame = (FrameLayout) findViewById(R.id.fl_nav_frame);
mLlTabGroup = (LinearLayout) findViewById(R.id.ll_tab_group);
mIndicatorView = findViewById(R.id.indicator_view);
mVpContent = (ViewPager) findViewById(R.id.vp_content);
//初始化导航栏
for (int i = 0; i < mFuncEntityList.size(); i++) {
FuncEntity funcEntity = mFuncEntityList.get(i);
RelativeLayout rlTabCell = (RelativeLayout) getLayoutInflater().inflate(R.layout.layout_tab_cell_num, mLlTabGroup, false);
TextView tvTabName = (TextView) rlTabCell.findViewById(R.id.tv_tab_name);
TextView tvMsgNum = (TextView) rlTabCell.findViewById(R.id.tv_msg_num);
TextView tvRedDot = (TextView) rlTabCell.findViewById(R.id.tv_red_dot);
tvMsgNum.setVisibility(View.GONE);
tvRedDot.setVisibility(View.GONE);
tvTabName.setText(funcEntity.getFunName());
rlTabCell.setTag(funcEntity.getId());
mLlTabGroup.addView(rlTabCell);
}
mPagerAdapter = new FragmentPagerAdapter(mFragmentManager) {
@Override
public Fragment getItem(int position) {
return getFuncFragment(mFuncEntityList.get(position));
}
@Override
public int getCount() {
return mFuncEntityList.size();
}
};
mVpContent.setAdapter(mPagerAdapter);
//请求角标数量
for (FuncEntity funcEntity : mFuncEntityList) {
requestMsgNum(funcEntity);
}
}
/**
* Map集合，关联FuncEntity和Fragment，保存二者键值对，使二者具有一一对应关系。
*/
private Map<FuncEntity, BaseFuncFragment> mFuncFragmentMap = new HashMap<>();
private BaseFuncFragment getFuncFragment(FuncEntity funcEntity) {
BaseFuncFragment funcFragment = mFuncFragmentMap.get(funcEntity);
if (funcFragment == null) {
funcFragment = CommFuncFragment.newInstance(funcEntity);
if (funcFragment != null) {
mFuncFragmentMap.put(funcEntity, funcFragment);
}
}
return funcFragment;
}
Random random = new Random();
private int getMsgNum() {
int num = random.nextInt(99) + 1;
// Log.i("NavActivity", "getMsgNum: " + num);
return num;
}
/**
* 请求角标数量
*/
private void requestMsgNum(FuncEntity funcEntity) {
//请求角标数量
//......
//更新角标
updateTabNum(funcEntity.getId(), getMsgNum());
}
/**
* 更新数字
*
* @param tabId
* @param tabNum
*/
public void updateTabNum(int tabId, int tabNum) {
View tabView = mLlTabGroup.findViewWithTag(tabId);
if (tabView != null) {
TextView tvMsgNum = tabView.findViewById(R.id.tv_msg_num);
String tabNumStr = tabNum > 99 ? String.valueOf(99).concat("+") : String.valueOf(tabNum);
tvMsgNum.setText(tabNumStr);
tvMsgNum.setVisibility(tabNum == 0 ? View.GONE:View.VISIBLE);
}
}
/**
* 清除角标
* @param tabId
*/
public void clearTabNum(int tabId) {
updateTabNum(tabId, 0);
}
3.3 导航栏与ViewPager联动
需要为每一个 tab 设置点击监听：
for (int i = 0; i < mLlTabGroup.getChildCount(); i++) {
final int pos = i;
mLlTabGroup.getChildAt(i).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mVpContent.setCurrentItem(pos);
}
});
}
3.4 tab切换效果
mVpContent.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
private int lastPost = 0;
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
super.onPageScrolled(position, positionOffset, positionOffsetPixels);
if (Math.abs(position - lastPost) > 0) {
int llPos = lastPost;
int lrPos = lastPost == mFuncEntityList.size() - 1 ? lastPost : lastPost + 1;
int clPos = position;
int crPos = position == mFuncEntityList.size() - 1 ? position : position + 1;
if (llPos != clPos && llPos != crPos) {
mLlTabGroup.getChildAt(llPos).findViewById(R.id.tv_tab_name).setAlpha(0.6f);
}
if (lrPos != clPos && lrPos != crPos) {
mLlTabGroup.getChildAt(lrPos).findViewById(R.id.tv_tab_name).setAlpha(0.6f);
}
}
//设置指示器位移
RelativeLayout leftCell = (RelativeLayout) mLlTabGroup.getChildAt(position);
int rightPos = position == mFuncEntityList.size() - 1 ? position : position + 1;
RelativeLayout rightCell = (RelativeLayout) mLlTabGroup.getChildAt(rightPos);
float dist = (leftCell.getWidth() + rightCell.getWidth()) / 2f;
float indicatorCenterX = leftCell.getLeft() + leftCell.getWidth() / 2f + dist * positionOffset;
int translationX = (int) (indicatorCenterX - mIndicatorView.getWidth() / 2f);
mIndicatorView.setTranslationX(translationX);
//水平滚动条自动滚动
mHsvNavBar.scrollTo((int) (indicatorCenterX - mHsvNavBar.getWidth() / 2f), 0);
//文字透明度
if (position != rightPos) {
rightCell.findViewById(R.id.tv_tab_name).setAlpha(0.6f + 0.4f * positionOffset);
leftCell.findViewById(R.id.tv_tab_name).setAlpha(1f - 0.4f * positionOffset);
} else {
leftCell.findViewById(R.id.tv_tab_name).setAlpha(1f - 0.4f * positionOffset);
}
lastPost = position;
}
});
4. 代码
完整代码：
NavActivity.java
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.wzhy.viewpagerserial.base.BaseActivity;
import com.wzhy.viewpagerserial.R;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
public class NavActivity extends BaseActivity {
private HorizontalScrollView mHsvNavBar;
private FrameLayout mFlNavFrame;
private LinearLayout mLlTabGroup;
private View mIndicatorView;
private ViewPager mVpContent;
private ArrayList<FuncEntity> mFuncEntityList = new ArrayList<>();
private FuncEntity mCurrFuncEntity;
private FragmentManager mFragmentManager;
private FragmentPagerAdapter mPagerAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nav);
initData();
initView();
setListeners();
//请求角标数量
for (FuncEntity funcEntity : mFuncEntityList) {
requestMsgNum(funcEntity);
}
}
private void initData() {
mFuncEntityList.add(new FuncEntity("关注", 0));
mFuncEntityList.add(new FuncEntity("推荐", 1));
mFuncEntityList.add(new FuncEntity("视频", 2));
mFuncEntityList.add(new FuncEntity("热点", 3));
mFuncEntityList.add(new FuncEntity("直播", 4));
mFuncEntityList.add(new FuncEntity("精品课", 5));
mFuncEntityList.add(new FuncEntity("娱乐", 6));
mFuncEntityList.add(new FuncEntity("科技", 7));
mFuncEntityList.add(new FuncEntity("懂车帝", 8));
mFuncEntityList.add(new FuncEntity("财经", 9));
mFuncEntityList.add(new FuncEntity("国际", 10));
mFuncEntityList.add(new FuncEntity("体育", 11));
mFuncEntityList.add(new FuncEntity("问答", 12));
mCurrFuncEntity = mFuncEntityList.get(0);
}
@Override
public void initView() {
mFragmentManager = getSupportFragmentManager();
//find views
mHsvNavBar = (HorizontalScrollView) findViewById(R.id.hsv_nav_bar);
mFlNavFrame = (FrameLayout) findViewById(R.id.fl_nav_frame);
mLlTabGroup = (LinearLayout) findViewById(R.id.ll_tab_group);
mIndicatorView = findViewById(R.id.indicator_view);
mVpContent = (ViewPager) findViewById(R.id.vp_content);
//初始化导航栏
for (int i = 0; i < mFuncEntityList.size(); i++) {
FuncEntity funcEntity = mFuncEntityList.get(i);
RelativeLayout rlTabCell = (RelativeLayout) getLayoutInflater().inflate(R.layout.layout_tab_cell_num, mLlTabGroup, false);
TextView tvTabName = (TextView) rlTabCell.findViewById(R.id.tv_tab_name);
TextView tvMsgNum = (TextView) rlTabCell.findViewById(R.id.tv_msg_num);
TextView tvRedDot = (TextView) rlTabCell.findViewById(R.id.tv_red_dot);
tvMsgNum.setVisibility(View.GONE);
tvRedDot.setVisibility(View.GONE);
tvTabName.setText(funcEntity.getFunName());
rlTabCell.setTag(funcEntity.getId());
mLlTabGroup.addView(rlTabCell);
}
mPagerAdapter = new FragmentPagerAdapter(mFragmentManager) {
@Override
public Fragment getItem(int position) {
return getFuncFragment(mFuncEntityList.get(position));
}
@Override
public int getCount() {
return mFuncEntityList.size();
}
};
mVpContent.setAdapter(mPagerAdapter);
}
/**
* Map集合，关联FuncEntity和Fragment，保存二者键值对，使二者具有一一对应关系。
*/
private Map<FuncEntity, BaseFuncFragment> mFuncFragmentMap = new HashMap<>();
private BaseFuncFragment getFuncFragment(FuncEntity funcEntity) {
BaseFuncFragment funcFragment = mFuncFragmentMap.get(funcEntity);
if (funcFragment == null) {
funcFragment = CommFuncFragment.newInstance(funcEntity);
if (funcFragment != null) {
mFuncFragmentMap.put(funcEntity, funcFragment);
}
}
return funcFragment;
}
Random random = new Random();
private int getMsgNum() {
int num = random.nextInt(99) + 1;
// Log.i("NavActivity", "getMsgNum: " + num);
return num;
}
/**
* 请求角标数量
*/
private void requestMsgNum(FuncEntity funcEntity) {
//请求角标数量
//......
//更新角标
updateTabNum(funcEntity.getId(), getMsgNum());
}
/**
* 更新数字
*
* @param tabId
* @param tabNum
*/
public void updateTabNum(int tabId, int tabNum) {
View tabView = mLlTabGroup.findViewWithTag(tabId);
if (tabView != null) {
TextView tvMsgNum = tabView.findViewById(R.id.tv_msg_num);
String tabNumStr = tabNum > 99 ? String.valueOf(99).concat("+") : String.valueOf(tabNum);
tvMsgNum.setText(tabNumStr);
tvMsgNum.setVisibility(tabNum == 0 ? View.GONE : View.VISIBLE);
}
}
/**
* 清除角标
*
* @param tabId
*/
public void clearTabNum(int tabId) {
updateTabNum(tabId, 0);
}
@Override
public void setListeners() {
for (int i = 0; i < mLlTabGroup.getChildCount(); i++) {
final int pos = i;
mLlTabGroup.getChildAt(i).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mVpContent.setCurrentItem(pos);
}
});
}
mVpContent.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
private int lastPost = 0;
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
super.onPageScrolled(position, positionOffset, positionOffsetPixels);
if (Math.abs(position - lastPost) > 0) {
int llPos = lastPost;
int lrPos = lastPost == mFuncEntityList.size() - 1 ? lastPost : lastPost + 1;
int clPos = position;
int crPos = position == mFuncEntityList.size() - 1 ? position : position + 1;
if (llPos != clPos && llPos != crPos) {
mLlTabGroup.getChildAt(llPos).findViewById(R.id.tv_tab_name).setAlpha(0.6f);
}
if (lrPos != clPos && lrPos != crPos) {
mLlTabGroup.getChildAt(lrPos).findViewById(R.id.tv_tab_name).setAlpha(0.6f);
}
}
//设置指示器位移
RelativeLayout leftCell = (RelativeLayout) mLlTabGroup.getChildAt(position);
int rightPos = position == mFuncEntityList.size() - 1 ? position : position + 1;
RelativeLayout rightCell = (RelativeLayout) mLlTabGroup.getChildAt(rightPos);
float dist = (leftCell.getWidth() + rightCell.getWidth()) / 2f;
float indicatorCenterX = leftCell.getLeft() + leftCell.getWidth() / 2f + dist * positionOffset;
int translationX = (int) (indicatorCenterX - mIndicatorView.getWidth() / 2f);
mIndicatorView.setTranslationX(translationX);
//水平滚动条自动滚动
mHsvNavBar.scrollTo((int) (indicatorCenterX - mHsvNavBar.getWidth() / 2f), 0);
//文字透明度
if (position != rightPos) {
rightCell.findViewById(R.id.tv_tab_name).setAlpha(0.6f + 0.4f * positionOffset);
leftCell.findViewById(R.id.tv_tab_name).setAlpha(1f - 0.4f * positionOffset);
} else {
leftCell.findViewById(R.id.tv_tab_name).setAlpha(1f - 0.4f * positionOffset);
}
lastPost = position;
}
});
}
private FuncEntity getCurrFuncEntity() {
return mFuncEntityList.get(mVpContent.getCurrentItem());
}
@Override
public void onClick(View v) {
}
}
NavActivity.java
import android.support.v7.app.AppCompatActivity;
import android.view.View;
public abstract class BaseActivity extends AppCompatActivity implements IView {
protected View.OnClickListener mOnClickListener;
protected View.OnClickListener getOnClickListener() {
if (mOnClickListener == null) {
mOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
BaseActivity.this.onClick(v);
}
};
}
return mOnClickListener;
}
}
IView.java
import android.view.View;
public interface IView {
void initView();
void setListeners();
void onClick(View v);
}
BaseFuncFragment.java
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import com.wzhy.viewpagerserial.base.IView;
public abstract class BaseFuncFragment extends Fragment implements IView {
protected FuncEntity mFuncEntity;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
if (args.containsKey("funcEntity")) {
mFuncEntity = (FuncEntity) args.getSerializable("funcEntity");
}
}
}
CommFuncFragment.java
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.wzhy.viewpagerserial.R;
/**
*
*/
public class CommFuncFragment extends BaseFuncFragment {
private View mView;
public CommFuncFragment() {
}
public static CommFuncFragment newInstance(FuncEntity funcEntity) {
Bundle args = new Bundle();
args.putSerializable("funcEntity", funcEntity);
CommFuncFragment fragment = new CommFuncFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_comm_func, container, false);
initView();
return mView;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setListeners();
}
@Override
public void initView() {
((TextView) mView.findViewById(R.id.tv_page_name)).setText(mFuncEntity.getFunName());
}
@Override
public void setListeners() {
}
@Override
public void onClick(View v) {
}
}
fragment_comm_func.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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=".nav.CommFuncFragment">
<TextView
android:id="@+id/tv_page_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="48dp"
tools:text="tabName"
android:textColor="@color/common_color"
android:layout_gravity="center"/>
</FrameLayout>
5. 参考
项目地址：github：https://github.com/wangzhengyangNo1/ViewPagerSerialDemo
分类
已于2021-3-1 16:50:53修改
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