QQ聊天、带表情、可翻页（Fragment-Activity通讯机制，ViewPager+Fragment+GridView）

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;
	//viewpager
	private ViewPager biaoqing_viewpager;
	//adapter
	private 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position
	private int currPos;
	private SpannableStringBuilder spb;

	@Override
	protected 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() {

			@Override
			public 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;
			}

			@Override
			public void onPageScrolled(int arg0, float arg1, int arg2) {

			}

			@Override
			public void onPageScrollStateChanged(int arg0) {

			}
		});

		iv_show.setOnClickListener(this);
		tv_send.setOnClickListener(this);
	}

	@Override
	public 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
	@Override
	public 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());
	}

	@Override
	public Fragment getItem(int pos) {
		return Filmfragments.get(pos);
	}

	@Override
	public 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;

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		biaoqing1View = View.inflate(getActivity(), R.layout.biaoqing1, null);
		initView();
		return biaoqing1View;
	}

	@Override
	public 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() {

			@Override
			public 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;
		}

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return imgs.length;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return imgs[position];
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public 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;
	@Override
	public 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() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				mListener.onArticleSelected(1,imgs, position);
			}

		});
	}

	@Override
	public 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;
		}
		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return imgs.length;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return imgs[position];
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public 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>
时间： 2024-10-09 20:08:52

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