Fragment进阶（七）----->QQ聊天、带表情、可翻页，附带回调通讯接口

来源：互联网发布：罗尼库尔曼数据深蹲编辑：程序博客网时间：2024/06/05 08:51

这几天在研究QQ表情，闲来无事，从网上下载资源，感觉代码量太大，看的云里雾里，后来果断自己写了一个Demo，虽然功能不全，但是自己体会很深，废话不多说，一步步来把

先看下整体的效果图吧

代码下载地址 http://download.csdn.net/detail/u013210620/8815585

首先看整体界面的布局效果+布局文件吧

布局文件

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="0dp"        android:layout_weight="1" >        <ListView            android:layout_width="fill_parent"            android:layout_height="fill_parent" >        </ListView>    </LinearLayout>    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="50dp"        android:background="#EEE9E9"        android:gravity="center"        android:orientation="horizontal" >        <ImageView            android:id="@+id/iv_show"            android:layout_width="30dp"            android:layout_height="30dp"            android:layout_marginLeft="5dp"            android:background="@drawable/selector_show_biaoqing" />        <EditText            android:id="@+id/tv_biaoqingkuang"            android:layout_width="0dp"            android:layout_height="30dp"            android:layout_marginLeft="5dp"            android:layout_marginRight="5dp"            android:layout_weight="1"            android:background="@drawable/textview_style"            android:gravity="center_vertical"            android:hint="选择表情"            android:inputType="textMultiLine" />        <TextView            android:id="@+id/tv_send"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginRight="5dp"            android:text="发送"            android:textSize="20dp" />    </LinearLayout>    <LinearLayout        android:id="@+id/ll_biaoqing"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="vertical"        android:visibility="visible" >        <android.support.v4.view.ViewPager            android:id="@+id/biaoqing_viewpager"            android:layout_width="fill_parent"            android:layout_height="150dp"            android:background="#FFDFD7D7"            android:visibility="visible" />    </LinearLayout>    <RelativeLayout        android:id="@+id/rl_indicator"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:background="#FFDFD7D7"        android:gravity="center" >        <ImageView            android:id="@+id/iv_indicator1"            android:layout_width="30dp"            android:layout_height="30dp"            android:background="@drawable/flag_online" />        <!--         <ImageView            android:id="@+id/iv_indicator_up1"            android:layout_width="30dp"            android:layout_height="30dp"            android:layout_centerVertical="true"            android:background="@drawable/selector_dot" />         -->        <ImageView            android:id="@+id/iv_indicator2"            android:layout_width="30dp"            android:layout_height="30dp"            android:layout_toRightOf="@id/iv_indicator1"            android:background="@drawable/flag_offline" />        <!--          <ImageView             android:visibility="gone"             android:layout_toRightOf="@id/iv_indicator_up1"            android:id="@+id/iv_indicator_up2"            android:layout_width="30dp"            android:layout_height="30dp"            android:layout_centerVertical="true"            android:background="@drawable/flag_online" />                 -->    </RelativeLayout></LinearLayout>

接下来看主布局文件代码

MainActivity.java

package com.example.qqsmiledemo;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.text.Spannable;import android.text.SpannableString;import android.text.SpannableStringBuilder;import android.text.style.ImageSpan;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.RelativeLayout;import android.widget.TextView;import android.widget.Toast;import com.example.qqsmiledemo.MyBiaoQingFragment1.OnArticleSelectedListener;import com.example.qqsmiledemo.MyBiaoQingFragment2.OnArticleSelectedListener2;public class MainActivity extends FragmentActivity implements OnClickListener,OnArticleSelectedListener, OnArticleSelectedListener2 {//切换是否显示表情栏的控件private ImageView iv_show;//输入、发送表情框控件private TextView tv_biaoqingkuang,tv_send;//表情框控件private LinearLayout ll_biaoqing;//viewpager切换时，高亮显示控件private RelativeLayout rl_indicator;private ImageView iv_indicator1;private ImageView iv_indicator2;//viewpagerprivate ViewPager biaoqing_viewpager;//adapterprivate BiaoQingAdapter biaoQingAdapter;// 默认表情区域不显示（隐藏状态）private boolean isBiaoqingShow = false;//目前viewpager所在页面的positionprivate int currPos;private SpannableStringBuilder spb;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {iv_show = (ImageView) findViewById(R.id.iv_show);tv_biaoqingkuang = (TextView) findViewById(R.id.tv_biaoqingkuang);tv_send = (TextView) findViewById(R.id.tv_send);ll_biaoqing = (LinearLayout) findViewById(R.id.ll_biaoqing);iv_indicator1 = (ImageView) findViewById(R.id.iv_indicator1);iv_indicator2 = (ImageView) findViewById(R.id.iv_indicator2);rl_indicator = (RelativeLayout) findViewById(R.id.rl_indicator);biaoqing_viewpager = (ViewPager) findViewById(R.id.biaoqing_viewpager);biaoQingAdapter = new BiaoQingAdapter(getSupportFragmentManager());biaoqing_viewpager.setAdapter(biaoQingAdapter);// 设置页面改变监听biaoqing_viewpager.setOnPageChangeListener(new OnPageChangeListener() {@Overridepublic void onPageSelected(int position) {switch (position) {case 0:if (currPos == 1) {iv_indicator1.setBackgroundResource(R.drawable.flag_online);iv_indicator2.setBackgroundResource(R.drawable.flag_offline);}break;case 1:if (currPos == 0) {iv_indicator2.setBackgroundResource(R.drawable.flag_online);iv_indicator1.setBackgroundResource(R.drawable.flag_offline);}break;default:break;}currPos = position;}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {}@Overridepublic void onPageScrollStateChanged(int arg0) {}});iv_show.setOnClickListener(this);tv_send.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.iv_show:if (!isBiaoqingShow) {ll_biaoqing.setVisibility(View.VISIBLE);rl_indicator.setVisibility(View.VISIBLE);isBiaoqingShow = true;} else {ll_biaoqing.setVisibility(View.GONE);rl_indicator.setVisibility(View.GONE);isBiaoqingShow = false;}break;case R.id.tv_send:Toast.makeText(MainActivity.this, "聊天界面功能未实现", 0).show();break;default:break;}}//实现接口方法@Overridepublic void onArticleSelected(int pagePos, int[] imgs, int position) {if (pagePos == 0) {if (position < imgs.length - 1) {spb = new SpannableStringBuilder();Bitmap bitmap = BitmapFactory.decodeResource(getResources(),imgs[position]);bitmap = Bitmap.createScaledBitmap(bitmap, 40, 40, true);// imageSpan用来让图片代替字体的ImageSpan imageSpan = new ImageSpan(this, bitmap);// 用来设置EditText多种样式的类SpannableString spanString = new SpannableString("表情");// 指定位置替换字体spanString.setSpan(imageSpan, 0, spanString.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);spb.append(spanString);tv_biaoqingkuang.append(spb);} else {Toast.makeText(MainActivity.this, "回退删除表情未实现，用系统自带的吧", 0).show();}} else if (pagePos == 1) {if (position < imgs.length - 1) {spb = new SpannableStringBuilder();Bitmap bitmap = BitmapFactory.decodeResource(getResources(),imgs[position]);bitmap = Bitmap.createScaledBitmap(bitmap, 40, 40, true);ImageSpan imageSpan = new ImageSpan(this, bitmap);SpannableString spanString = new SpannableString("表情");spanString.setSpan(imageSpan, 0, spanString.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);spb.append(spanString);tv_biaoqingkuang.append(spb);} else {Toast.makeText(MainActivity.this, "回退删除表情未实现，用系统自带的吧", 0).show();}}}}

接下来看BiaoQingAdapter

package com.example.qqsmiledemo;import java.util.ArrayList;import java.util.List;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;public class BiaoQingAdapter extends FragmentPagerAdapter {private List<Fragment> Filmfragments = new ArrayList<>();public BiaoQingAdapter(FragmentManager fm) {super(fm);Filmfragments.add(new MyBiaoQingFragment1());Filmfragments.add(new MyBiaoQingFragment2());}@Overridepublic Fragment getItem(int pos) {return Filmfragments.get(pos);}@Overridepublic int getCount() {return Filmfragments.size();}}

接下来看2个Fragment

MyBiaoQingFragment1

package com.example.qqsmiledemo;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;public class MyBiaoQingFragment1 extends Fragment {private View biaoqing1View;private GridView gv_biaoqing1;private BiaoQingFragment1Adapter biaoQingFragment1Adapter;private OnArticleSelectedListener mListener;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {biaoqing1View = View.inflate(getActivity(), R.layout.biaoqing1, null);initView();return biaoqing1View;}@Overridepublic void onAttach(Activity activity) {super.onAttach(activity);try {//强转换mListener = (OnArticleSelectedListener) activity;} catch (ClassCastException e) {throw new ClassCastException(activity.toString()+ "must implement OnArticleSelectedListener");}}private void initView() {gv_biaoqing1 = (GridView) biaoqing1View.findViewById(R.id.gv_biaoqing1);biaoQingFragment1Adapter = new BiaoQingFragment1Adapter(getActivity());gv_biaoqing1.setAdapter(biaoQingFragment1Adapter);gv_biaoqing1.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {// 每个条目的点击监听事件mListener.onArticleSelected(0,imgs, position);}});}private int[] imgs = { R.drawable.emoji_0, R.drawable.emoji_1,R.drawable.emoji_2, R.drawable.emoji_3, R.drawable.emoji_4,R.drawable.emoji_5, R.drawable.emoji_6, R.drawable.emoji_7,R.drawable.emoji_8, R.drawable.emoji_9, R.drawable.emoji_10,R.drawable.emoji_11, R.drawable.emoji_12, R.drawable.emoji_13,R.drawable.emoji_14, R.drawable.emoji_15, R.drawable.emoji_16,R.drawable.emoji_17, R.drawable.emoji_18, R.drawable.emoji_19,R.drawable.top_return_n,};class BiaoQingFragment1Adapter extends BaseAdapter {private Context context;BiaoQingFragment1Adapter(Context context) {this.context = context;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn imgs.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn imgs[position];}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = View.inflate(context, R.layout.picture_item, null);ImageView imageView = (ImageView) view.findViewById(R.id.image);imageView.setBackgroundResource(imgs[position]);return view;}}/** * 回调接口--每个表情被选中调用接口 * */public interface OnArticleSelectedListener {public void onArticleSelected(int pagePos,int[] imgs, int position);}}

MyBiaoQingFragment2

package com.example.qqsmiledemo;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;public class MyBiaoQingFragment2 extends Fragment {private View biaoqing2View;private GridView gv_biaoqing2;private BiaoQingFragment2Adapter biaoQingFragment2Adapter;private OnArticleSelectedListener2 mListener;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {biaoqing2View = View.inflate(getActivity(), R.layout.biaoqing2, null);initView();return biaoqing2View;}private void initView() {gv_biaoqing2 = (GridView) biaoqing2View.findViewById(R.id.gv_biaoqing2);biaoQingFragment2Adapter = new BiaoQingFragment2Adapter(getActivity());gv_biaoqing2.setAdapter(biaoQingFragment2Adapter);gv_biaoqing2.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {mListener.onArticleSelected(1,imgs, position);}});}@Overridepublic void onAttach(Activity activity) {super.onAttach(activity);try {mListener = (OnArticleSelectedListener2) activity;} catch (ClassCastException e) {throw new ClassCastException(activity.toString()+ "must implement OnArticleSelectedListener");}}private int[] imgs = { R.drawable.emoji_20, R.drawable.emoji_21, R.drawable.emoji_22,  R.drawable.emoji_23, R.drawable.emoji_24, R.drawable.emoji_25,  R.drawable.emoji_26, R.drawable.emoji_27, R.drawable.emoji_28,  R.drawable.emoji_29, R.drawable.emoji_30, R.drawable.emoji_31,  R.drawable.emoji_32, R.drawable.emoji_33, R.drawable.emoji_34,  R.drawable.top_return_n,  }; class BiaoQingFragment2Adapter extends BaseAdapter{private Context context;BiaoQingFragment2Adapter(Context context){this.context = context;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn imgs.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn imgs[position];}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = View.inflate(context, R.layout.picture_item, null);ImageView imageView = (ImageView) view.findViewById(R.id.image);imageView.setBackgroundResource(imgs[position]);return view;}}public interface OnArticleSelectedListener2 {public void onArticleSelected(int pagePos,int[] imgs, int position);}}

然后还有2个Fragment的布局文件

biaoqing1.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <GridView        android:padding="10dp"        android:id="@+id/gv_biaoqing1"        android:layout_width="fill_parent"        android:layout_height="fill_parent"                android:columnWidth="35dp"        android:gravity="center"        android:numColumns="auto_fit"        android:stretchMode="columnWidth"                android:horizontalSpacing="10dp"        android:verticalSpacing="10dp" >    </GridView></LinearLayout>

biaoqing2.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <GridView        android:padding="10dp"        android:id="@+id/gv_biaoqing2"        android:layout_width="fill_parent"        android:layout_height="fill_parent"                android:columnWidth="35dp"        android:gravity="center"        android:numColumns="auto_fit"        android:stretchMode="columnWidth"                android:horizontalSpacing="10dp"        android:verticalSpacing="10dp" >    </GridView></LinearLayout>

另外GridView里面的每个Item

picture_item.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content">    <ImageView        android:id="@+id/image"        android:layout_width="30dp"        android:layout_height="30dp"        android:layout_gravity="center"        android:padding="4dp"        android:scaleType="fitXY" /></LinearLayout>

另外还有那个输入表情的文本框的圆角布局文件

selector_show_biaoqing.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:state_pressed="true" android:drawable="@drawable/ic_open_emoji_pressed"/>    <item android:state_pressed="false" android:drawable="@drawable/ic_open_emoji_unpress"/>    <item android:drawable="@drawable/ic_open_emoji_unpress"/></selector>

textview_style.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">  <solid android:color="#ffffff" />    <corners android:radius="5dp" />      <padding           android:left="0dp"           android:top="0dp"          android:right="0dp"           android:bottom="0dp" /></shape>

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