編輯：關於Android編程
經過一個星期的折騰，終於做完了這個Android 聊天表情輸入、表情翻頁帶效果、下拉刷新聊天記錄。這只是一個單獨聊天表情的輸入，以及聊天的效果實現。因為我沒有寫服務器，所以沒有雙方聊天的效果。主要是聊天中表情的選擇，發送。表情翻頁帶有不同的效果。我在主要代碼中都寫了注釋。下面看代碼實現。附上本文源碼，代碼較多。
一、先看實現的效果圖
二、調用接口以及設置MainActivity
package com.example.activity;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import com.org.adapter.FaceAdapter;
import com.org.adapter.FacePageAdeapter;
import com.org.adapter.MessageAdapter;
import com.org.util.MyApplication;
import com.org.util.SharePreferenceUtil;
import com.org.view.CirclePageIndicator;
import com.org.view.JazzyViewPager;
import com.org.view.JazzyViewPager.TransitionEffect;
import com.org.xlistview.MsgListView;
import com.org.xlistview.MsgListView.IXListViewListener;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.drawable.ColorDrawable;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextWatcher;
import android.text.style.ImageSpan;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup.LayoutParams;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
public class MainActivity extends Activity
implements
OnClickListener,
OnTouchListener,
IXListViewListener{
private Button sendBtn;
private ImageButton faceBtn;
private LinearLayout faceLinearLayout;
private EditText msgEt;
private InputMethodManager mInputMethodManager;
private MessageAdapter mMessageAdapter;
private JazzyViewPager faceViewPager;
private MsgListView mMsgListView;
private MyApplication mApplication;
private SharePreferenceUtil mSpUtil;
private WindowManager.LayoutParams mLayoutParams;
private List mListFaceKeys;
private int currentPage = 0;
private boolean isFaceShow = false;
private static int MsgPagerNum;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.chat_main);
initData();
initUI();
initFacePage();
}
private void initData() {
mApplication = MyApplication.getInstance();
//SharePreference存儲類
mSpUtil = new SharePreferenceUtil(this, message_save);
//初始化消息列表適配器
mMessageAdapter = new MessageAdapter(this, initMsgData());
//加載表情的列表
Set keySet = MyApplication.getInstance().getFaceMap().keySet();
mListFaceKeys = new ArrayList();
mListFaceKeys.addAll(keySet);
MsgPagerNum = 0;
}
private void initUI() {
mInputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
//獲取窗口觸摸操作
mLayoutParams = getWindow().getAttributes();
mMsgListView = (MsgListView) findViewById(R.id.msg_listView);
// 觸摸ListView隱藏表情和輸入法
mMsgListView.setOnTouchListener(this);
mMsgListView.setPullLoadEnable(false);
mMsgListView.setXListViewListener(this);
mMsgListView.setAdapter(mMessageAdapter);
mMsgListView.setSelection(mMessageAdapter.getCount() - 1);
sendBtn = (Button) findViewById(R.id.send_btn);
faceBtn = (ImageButton) findViewById(R.id.face_btn);
faceLinearLayout = (LinearLayout) findViewById(R.id.face_ll);
msgEt = (EditText) findViewById(R.id.msg_et);
faceLinearLayout = (LinearLayout) findViewById(R.id.face_ll);
faceViewPager = (JazzyViewPager) findViewById(R.id.face_pager);
//標題欄控件
TextView mTitle = (TextView) findViewById(R.id.ivTitleName);
mTitle.setText(默默笙箫);
TextView mTitleLeftBtn = (TextView) findViewById(R.id.ivTitleBtnLeft);
mTitleLeftBtn.setVisibility(View.VISIBLE);
mTitleLeftBtn.setOnClickListener(this);
//輸入框的觸摸監聽的綁定
msgEt.setOnTouchListener(this);
msgEt.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (mLayoutParams.softInputMode == WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE
|| isFaceShow) {
faceLinearLayout.setVisibility(View.GONE);
isFaceShow = false;
// imm.showSoftInput(msgEt, 0);
return true;
}
}
return false;
}
});
//輸入框的實時輸入長度的監聽
msgEt.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
if (s.length() > 0) {
sendBtn.setEnabled(true);
} else {
sendBtn.setEnabled(false);
}
}
});
faceBtn.setOnClickListener(this);
sendBtn.setOnClickListener(this);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (v.getId()) {
case R.id.msg_listView: //ListView觸摸實現
mInputMethodManager.hideSoftInputFromWindow(msgEt.getWindowToken(), 0);
faceLinearLayout.setVisibility(View.GONE);
isFaceShow = false;
break;
case R.id.msg_et: //輸入框觸摸實現
mInputMethodManager.showSoftInput(msgEt, 0);
faceLinearLayout.setVisibility(View.GONE);
isFaceShow = false;
break;
default:
break;
}
return false;
}
//歷史數據，在開始時顯示
private List initMsgData() {
List msgList = new ArrayList();// 消息對象數組
MessageItem item = new MessageItem(MessageItem.MESSAGE_TYPE_TEXT,
mSpUtil.getNick(), System.currentTimeMillis(), 歷史消息,
mSpUtil.getHeadIcon(), false, 0);
msgList.add(item);
return msgList;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.face_btn: //彈出表情
if (!isFaceShow) {
mInputMethodManager.hideSoftInputFromWindow(msgEt.getWindowToken(), 0);
try {
Thread.sleep(80);// 解決此時會黑一下屏幕的問題
} catch (InterruptedException e) {
e.printStackTrace();
}
faceLinearLayout.setVisibility(View.VISIBLE);
isFaceShow = true;
} else {
faceLinearLayout.setVisibility(View.GONE);
isFaceShow = false;
}
break;
case R.id.send_btn:// 發送消息
String msg = msgEt.getText().toString();
MessageItem item = new MessageItem(MessageItem.MESSAGE_TYPE_TEXT,
mSpUtil.getNick(), System.currentTimeMillis(), msg,
mSpUtil.getHeadIcon(), false, 0);
mMessageAdapter.upDateMsg(item);
mMsgListView.setSelection(mMessageAdapter.getCount() - 1);
msgEt.setText();
break;
case R.id.ivTitleBtnLeft:
finish();
break;
// case R.id.ivTitleBtnRigh:
// break;
default:
break;
}
}
//加載表情，以及設置翻頁效果
private void initFacePage() {
List lv = new ArrayList();
for (int i = 0; i < MyApplication.NUM_PAGE; ++i)
lv.add(getGridView(i));
FacePageAdeapter adapter = new FacePageAdeapter(lv, faceViewPager);
faceViewPager.setAdapter(adapter);
faceViewPager.setCurrentItem(currentPage);
faceViewPager.setTransitionEffect(mEffects[mSpUtil.getFaceEffect()]);
CirclePageIndicator indicator = (CirclePageIndicator) findViewById(R.id.indicator);
indicator.setViewPager(faceViewPager);
adapter.notifyDataSetChanged();
faceLinearLayout.setVisibility(View.GONE);
indicator.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
currentPage = arg0;
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// do nothing
}
@Override
public void onPageScrollStateChanged(int arg0) {
// do nothing
}
});
}
//表情表格控件放置，設置背景
private GridView getGridView(int i) {
GridView gv = new GridView(this);
gv.setNumColumns(7); //一行顯示7個表情
gv.setSelector(new ColorDrawable(Color.TRANSPARENT));// 屏蔽GridView默認點擊效果
gv.setBackgroundColor(Color.TRANSPARENT);
gv.setCacheColorHint(Color.TRANSPARENT);
gv.setHorizontalSpacing(1);
gv.setVerticalSpacing(1);
gv.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
gv.setGravity(Gravity.CENTER);
gv.setAdapter(new FaceAdapter(this, i));
gv.setOnTouchListener(forbidenScroll()); // 防止亂pageview亂滾動
gv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView arg0, View arg1, int arg2,
long arg3) {
if (arg2 == MyApplication.NUM) { // 刪除表情鍵的位置
int selection = msgEt.getSelectionStart();
String text = msgEt.getText().toString();
if (selection > 0) {
String text2 = text.substring(selection - 1);
if (].equals(text2)) {
int start = text.lastIndexOf([);
int end = selection;
msgEt.getText().delete(start, end);
return;
}
msgEt.getText().delete(selection - 1, selection);
}
} else {
int count = currentPage * MyApplication.NUM + arg2;
// 注釋的部分，在EditText中顯示字符串
// String ori = msgEt.getText().toString();
// int index = msgEt.getSelectionStart();
// StringBuilder stringBuilder = new StringBuilder(ori);
// stringBuilder.insert(index, keys.get(count));
// msgEt.setText(stringBuilder.toString());
// msgEt.setSelection(index + keys.get(count).length());
// 下面這部分，在EditText中顯示表情
Bitmap bitmap = BitmapFactory.decodeResource(
getResources(), (Integer) MyApplication
.getInstance().getFaceMap().values()
.toArray()[count]);
if (bitmap != null) {
int rawHeigh = bitmap.getHeight();
int rawWidth = bitmap.getHeight();
int newHeight = 40;
int newWidth = 40;
// 計算縮放因子
float heightScale = ((float) newHeight) / rawHeigh;
float widthScale = ((float) newWidth) / rawWidth;
// 新建立矩陣
Matrix matrix = new Matrix();
matrix.postScale(heightScale, widthScale);
// 設置圖片的旋轉角度
// matrix.postRotate(-30);
// 設置圖片的傾斜
// matrix.postSkew(0.1f, 0.1f);
// 將圖片大小壓縮
// 壓縮後圖片的寬和高以及kB大小均會變化
Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0,
rawWidth, rawHeigh, matrix, true);
ImageSpan imageSpan = new ImageSpan(MainActivity.this,
newBitmap);
String emojiStr = mListFaceKeys.get(count);
SpannableString spannableString = new SpannableString(
emojiStr);
spannableString.setSpan(imageSpan,
emojiStr.indexOf('['),
emojiStr.indexOf(']') + 1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
msgEt.append(spannableString);
} else {
String ori = msgEt.getText().toString();
int index = msgEt.getSelectionStart();
StringBuilder stringBuilder = new StringBuilder(ori);
stringBuilder.insert(index, mListFaceKeys.get(count));
msgEt.setText(stringBuilder.toString());
msgEt.setSelection(index + mListFaceKeys.get(count).length());
}
}
}
});
return gv;
}
// 防止亂pageview亂滾動
private OnTouchListener forbidenScroll() {
return new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_MOVE) {
return true;
}
return false;
}
};
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
mInputMethodManager.hideSoftInputFromWindow(msgEt.getWindowToken(), 0);
faceLinearLayout.setVisibility(View.GONE);
isFaceShow = false;
super.onPause();
}
//處理下拉刷新的效果
@Override
public void onRefresh() {
MsgPagerNum++;
List msgList = initMsgData();
int position = mMessageAdapter.getCount();
mMessageAdapter.setMessageList(msgList);
mMsgListView.stopRefresh();
mMsgListView.setSelection(mMessageAdapter.getCount() - position - 1);
Log.i(Show,MsgPagerNum = + mMessageAdapter + , adapter.getCount() =
+ mMessageAdapter.getCount());
}
@Override
public void onLoadMore() {
// TODO Auto-generated method stub
}
private TransitionEffect mEffects[] = { TransitionEffect.Standard,
TransitionEffect.Tablet, TransitionEffect.CubeIn,
TransitionEffect.CubeOut, TransitionEffect.FlipVertical,
TransitionEffect.FlipHorizontal, TransitionEffect.Stack,
TransitionEffect.ZoomIn, TransitionEffect.ZoomOut,
TransitionEffect.RotateUp, TransitionEffect.RotateDown,
TransitionEffect.Accordion, };// 表情翻頁效果
}
一個手機號能注冊多個微信嗎 手機號注冊兩個微信號方法
一個手機號可以注冊兩個微信嗎？很多人還不知道一個手機號怎麼注冊2個甚至多個微信號，下面小編就跟大家分享一下方法吧！一個手機號怎麼注冊兩個微信： 登錄你(已
Android PopupWindow使用示例
示例效果如下： MainActivity.xml package sn.qdj.popupwindowdemo; import android.su
Android 信息中URL地址識別問題
ATCID主要用來處理PC端傳輸過來的AT命令，從AT命令實際處理的地方來說，主要分為3類： 1. 需要Modem來處理的AT命令； 2. 需要在nativ
混合開發 React Native與Android聯調
基礎配置部分解說過程是從你Native加入rn模塊，新建的rn項目配置的東西都有首先 在你的項目根目錄同級開一個rn目錄(這裡只是舉個例子)mkdir xxx-rn &a
