简介
究竟需要掌握多少英语句子才能用英语自由交际？怎样才算是学好了英语？一直以来，中国英语学习者都在为这些问题所困扰。尤其是当学习者具备了一定的英语基础，但对自己的学习进展感到怀疑和彷徨之时。
用疯狂的信念和超强的毅力去攻克英语！
900句不是你的终极目标！
用英语自由表达，你可以做得到！
学习，就从现在开始！
三十类基础功能表达;六十八人自由话题演练;最疯狂的口语学习套餐;最潮流的实用英语表达;900次疯狂铸就一口流利英语真正一本在手，沟通无忧！
1.寒暄与介绍
2. 观点与想法
3.喜欢与讨厌
4.寻求帮助与提供帮助
5.感激与致歉
6.聚会与离别
7.抱怨与恭维
8.同意与分歧
9.许可与拒绝
10.建议与忠告
你可以安装在平板电脑（三星平板，摩托罗拉Xoom），同样的程序，不同的体验。
程序签名后优化，运行更加流畅。
2011-12-07更新说明：
1. 针对Android 4.0优化。
2. 添加Welcome页面
下载地址： https://files.cnblogs.com/kangyi/CrazyEnglishUmeng_4.2.0.apk
程序截图
安装程序附件
/Files/kangyi/android app/CrazyEnglish900.zip
核心code：
package android.kaden.crazyenglish;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
import android.view.animation.AccelerateInterpolator;
import android.widget.RelativeLayout;
import android.widget.Toast;
public class CommonHelper {
private static final String TAG = "CommonHelper.java";
private static final String DATABASE_PATH = "/data/data/android.kaden.crazyenglish/databases/";
// android.os.Environment.getExternalStorageDirectory().getAbsolutePath() +
// "/crazy_enlish_db";
private static final String DATABASE_FILENAME = "sentencedb.db";
/*
* Open the exits database In this method we will copy the database file
* from raw folder to /sdcard/crazy_enlish_db/ folder, and then open the
* database which under /sdcard/crazy_enlish_db/ folder.
*/
public static SQLiteDatabase openDatabase(Context context) {
try {
String databaseFilename = DATABASE_PATH + "/" + DATABASE_FILENAME;
File dir = new File(DATABASE_PATH);
if (!dir.exists())
dir.mkdir();
if (!(new File(databaseFilename)).exists()) {
InputStream is = context.getResources().openRawResource(
R.raw.sentencedb);
FileOutputStream fos = new FileOutputStream(databaseFilename);
byte[] buffer = new byte[8192];
int count = 0;
while ((count = is.read(buffer)) > 0) {
fos.write(buffer, 0, count);
}
fos.close();
is.close();
}
// Open the database form the following address:
// /sdcard/crazy_enlish_db/sentencedb.db
SQLiteDatabase database = SQLiteDatabase.openOrCreateDatabase(
databaseFilename, null);
return database;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static List<Sentence> getCategoryList(Context context) {
List<Sentence> list = new ArrayList<Sentence>();
Cursor cursor = null;
SQLiteDatabase database = openDatabase(context);
try {
String[] column = { "ID", "Chinese", "English", "Pages" };
cursor = database.query("Category", column, null, null, null, null,
null);
cursor.moveToFirst();
int i = 1;
String Id = null;
while (cursor.getPosition() != cursor.getCount()) {
if (i < 10) {
Id = " " + cursor.getString(0);
i++;
} else {
Id = cursor.getString(0);
}
list.add(new Sentence(Id, cursor.getString(1), cursor
.getString(2), cursor.getString(3)));
cursor.moveToNext();
}
} catch (SQLException ex) {
Toast.makeText(context, "Read record error:" + ex.toString(),
Toast.LENGTH_LONG).show();
} finally {
if (cursor != null) {
cursor.close();
}
if (database.isOpen()) {
database.close();
}
}
return list;
}
public static List<Sentence> getCategoryedSentenceList(Context context,
String startId, String endId) {
List<Sentence> list = new ArrayList<Sentence>();
Cursor cursor = null;
SQLiteDatabase database = openDatabase(context);
try {
String[] column = { "Chinese", "English" };
cursor = database.query("sentenceTable", column, "ID>=? and ID<=?",
new String[] { startId, endId }, null, null, null);
cursor.moveToFirst();
while (cursor.getPosition() != cursor.getCount()) {
list
.add(new Sentence(cursor.getString(0), cursor
.getString(1)));
cursor.moveToNext();
}
} catch (SQLException ex) {
Toast.makeText(context, "Read record error:" + ex.toString(),
Toast.LENGTH_LONG).show();
} finally {
if (cursor != null) {
cursor.close();
}
if (database.isOpen()) {
database.close();
}
}
return list;
}
public static List<Sentence> getAllSentence(Context context) {
List<Sentence> list = new ArrayList<Sentence>();
Cursor cursor = null;
SQLiteDatabase database = openDatabase(context);
try {
String[] column = { "Chinese", "English" };
cursor = database.query("sentenceTable", column, null, null, null,
null, null);
cursor.moveToFirst();
while (cursor.getPosition() != cursor.getCount()) {
list.add(new Sentence(cursor.getString(0), cursor
.getString(1)));
cursor.moveToNext();
}
} catch (SQLException ex) {
Toast.makeText(context, "Read record error:" + ex.toString(),
Toast.LENGTH_LONG).show();
} finally {
if (cursor != null) {
cursor.close();
}
if (database.isOpen()) {
database.close();
}
}
return list;
}
/**
*
* @param context
* @return
*/
public static String getAppVersionName(Context context) {
String versionName = "";
try {
// ---get the package info---
PackageManager pm = context.getPackageManager();
PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);
versionName = pi.versionName;
if (versionName == null || versionName.length() <= 0) {
return "";
}
} catch (Exception e) {
Log.e(TAG, "Exception", e);
}
return versionName;
}
public static void startMyAnimation(RelativeLayout rl, int screenWidth,
int screenHeight) {
/*
* //DisplayMetrics dm = new DisplayMetrics();
* getWindowManager().getDefaultDisplay().getMetrics(dm); int
* screenWidth = dm.widthPixels; int screenHeight = dm.heightPixels;
*/
final float centerX = screenWidth;
final float centerY = screenHeight / 2.0f;
Rotate3dAnimation rotation = new Rotate3dAnimation(90, 0, centerX,
centerY, 300.0f, false);
rotation.setDuration(800);
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
rl.startAnimation(rotation);
}
public static void finishAnimation(RelativeLayout rl, int screenWidth,
int screenHeight) {
/*
* //DisplayMetrics dm = new DisplayMetrics();
* getWindowManager().getDefaultDisplay().getMetrics(dm); int
* screenWidth = dm.widthPixels; int screenHeight = dm.heightPixels;
*/
final float centerX = 0;
final float centerY = screenHeight / 2f;
Rotate3dAnimation rotation = new Rotate3dAnimation(0, 270, centerX,
centerY, 360.0f, true);
rotation.setDuration(2800);
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
rl.startAnimation(rotation);
}
}