Android 开发之基类（一）

不说太多，直接上代码，不懂再说，只是一些零碎代码做个记录，各位看官看得懂，我深表荣幸，看不懂我也没法。

import com.huianrong.app.widget.toast.HuiToast;

/**
* Created by LanYan on 2015/11/17.
*/
public interface OnBaseListener {

/**
* Code set theme related properties, such as: remove the title bar, full screen mode.
Simple:
*       //设置无标题
*      requestWindowFeature(Window.FEATURE_NO_TITLE);
*       //设置全屏
*      getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
*      WindowManager.LayoutParams.FLAG_FULLSCREEN);
*      代码设置主题相关属性，比如：去掉标题栏，全屏模式等。
*/
void applyTheme();

/**
* When the activity call the setContentView (int layout) method, this method is called to return to the layout
* 当activity 调用setContentView（int layout） 方法时，调用此方法返回Layout
* @return R.layout.xx
*/
int setContentViewId();

/**
*  initialization operation
*/
void initiazed();

/**
* 短时间的提示
* Tips for a short period of time
* @param content
*/
void shortToast(String content);

/**
* 长时间的提示
* Tips for a long period of time
* @param content
*/
void longToast(String content);

}

每个Activity需要涉及到的调用方法，下面是FragmentActivity基类（基于Xutils的注解）：

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PersistableBundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTabHost;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.Toast;

import com.huianrong.app.HuiApplication;
import com.huianrong.app.Interfaces.OnBaseListener;
import com.huianrong.app.helper.FragmentHelper;
import com.huianrong.app.widget.toast.HuiToast;
import com.lidroid.xutils.ViewUtils;

import java.util.ArrayList;

/**
* Created by LanYan on 2015/11/17.
*/
public abstract class BaseFragmentActivity extends FragmentActivity implements OnBaseListener {

@Override
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
super.onCreate(savedInstanceState, persistentState);
applyTheme();
setContentView(setContentViewId());
ViewUtils.inject(this);
HuiApplication.getInstance().addActivity(this);
initiazed();

}

@Override
public void applyTheme() {

}

@Override
public void initiazed() {

}

@Override
public void shortToast(String content) {
/*********ToastHelper略***********/
}

@Override
public void longToast(String content) {
/*********ToastHelper略***********/
}

/**
* 显示指定的Fragment
* According to the specified fragments
*
* @param framLayoutId
* @param cls
* @param <T>
*/
public <T extends Fragment> void replaceFragment(int framLayoutId, Class<T> cls) {
FragmentHelper.getInstance().replaceFragment(this, framLayoutId, cls);
}

/**
* 显示指定的Fragment
* According to the specified fragments
*
* @param framLayoutId
* @param cls
* @param tag
* @param <T>
*/
public <T extends Fragment> void replaceFragment(int framLayoutId, Class<T> cls, String tag) {

FragmentHelper.getInstance().replaceFragment(this, framLayoutId, cls, null);
}

/**
*添加Fragment集合并返回Fragment集合
* Add fragments set and return fragments
* @param framLayoutId
* @param clsList
* @param <T>
* @return
*/
public <T extends Fragment> ArrayList<Fragment> addFragmentList(int framLayoutId, Class<T>[] clsList) {
return FragmentHelper.getInstance().addFragmentList(this,framLayoutId, clsList);
}

/**
*添加Fragment集合并返回Fragment集合
* Add fragments set and return fragments
* @param framLayoutId
* @param clsList
* @param tag
* @param <T>
* @return
*/
public <T extends Fragment> ArrayList<Fragment> addFragmentList(int framLayoutId, Class<T>[] clsList, String tag) {

return FragmentHelper.getInstance().addFragmentList(this,framLayoutId, clsList, null);
}

/**
* 显示指定的Fragment
* According to the specified fragments
*/
public <T extends Fragment> void showFragment(int framLayoutId, int position, ArrayList<Fragment> mFragmentList) {

FragmentHelper.getInstance().showFragment(this, framLayoutId,position,mFragmentList);
}

/**
* 创建Handler实例
* Create a Handler instance
*/
public Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
decodeHandleMessage(msg);
}
};

/**
* 处理Handler接收到的消息
* Processing Handler receives the message
*
* @param msg
*/
protected void decodeHandleMessage(Message msg) {

}

}

BaseActivity同理，这里就不做多解释，Dialog PopupWindow也需要在基类封装，这里不做累赘叙述，下面来看FragmentHelper（还可以扩展动画）类：

import android.app.Activity;
import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;

import java.util.ArrayList;

/**
* Created by LanYan on 15/11/18.
*/
public class FragmentHelper {

public static FragmentHelper instance;

public FragmentHelper(){

}
public static FragmentHelper getInstance(){

if(instance==null){
synchronized (FragmentHelper.class){
if(instance==null){
instance=new FragmentHelper();
}
}
}
return instance;
}
/**
* 显示指定的Fragment
* According to the specified fragments
*
* @param framLayoutId
* @param cls
* @param <T>
*/
public <T extends Fragment> void replaceFragment(FragmentActivity mFragmentActivity,int framLayoutId, Class<T> cls) {
replaceFragment(mFragmentActivity,framLayoutId, cls, null);
}

/**
* 显示指定的Fragment
* According to the specified fragments
*
* @param framLayoutId
* @param cls
* @param tag
* @param <T>
*/
public <T extends Fragment> void replaceFragment(FragmentActivity mFragmentActivity,int framLayoutId, Class<T> cls, String tag) {
FragmentManager mFragmentManager = mFragmentActivity.getSupportFragmentManager();
FragmentTransaction mTransaction = mFragmentManager.beginTransaction();

T t = null;
try {
t = cls.newInstance();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}

if (tag == null) {
mTransaction.replace(framLayoutId, t, cls.getName());
} else {
mTransaction.replace(framLayoutId, t, tag);
}
mTransaction.commit();
}

public <T extends Fragment> ArrayList<Fragment> addFragmentList(FragmentActivity mFragmentActivity,int framLayoutId, Class<T>[] clsList) {
return addFragmentList(mFragmentActivity,framLayoutId, clsList, null);
}

public <T extends Fragment> ArrayList<Fragment> addFragmentList(FragmentActivity mFragmentActivity,int framLayoutId, Class<T>[] clsList, String tag) {

ArrayList<Fragment> mFragmentList = new ArrayList<>();

FragmentManager mFragmentManager = mFragmentActivity.getSupportFragmentManager();
FragmentTransaction mTransaction = mFragmentManager.beginTransaction();

for (int i = 0; i < clsList.length; i++) {
T t = null;
try {
t = clsList[i].newInstance();
mTransaction.add(framLayoutId, t, tag == null ? clsList[i].getName() : tag);
mFragmentList.add(t);
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
mTransaction.commit();

return mFragmentList;
}

/**
* 显示指定的Fragment
* According to the specified fragments
*/
public <T extends Fragment> void showFragment(FragmentActivity mFragmentActivity,int framLayoutId, int position, ArrayList<Fragment> mFragmentList) {

FragmentManager mFragmentManager = mFragmentActivity.getSupportFragmentManager();
FragmentTransaction mTransaction = mFragmentManager.beginTransaction();
for (int i = 0; i < mFragmentList.size(); i++) {
if (i == position) {
mTransaction.show(mFragmentList.get(i));
} else {
mTransaction.hide(mFragmentList.get(i));
}
}
mTransaction.commit();
}

}

下面是GsonHelper泛型解析数据：

import java.util.ArrayList;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;

public class GsonHelper {
private static GsonHelper mInstance;
private Gson mGson;
public GsonHelper(){
mGson=new Gson();
}
public static GsonHelper getInstance(){
if(mInstance==null){
synchronized (GsonHelper.class) {
if(mInstance==null){
mInstance=new GsonHelper();
}
}
}
return mInstance;
}

public <T> ArrayList<T> fromJsonList(String json, Class<T> cls) {
ArrayList<T> mList = new ArrayList<T>();
JsonArray array = new JsonParser().parse(json).getAsJsonArray();
for(final JsonElement elem : array){
mList.add(mGson.fromJson(elem, cls));
}
return mList;
}

public <T> T fromJsonObject(String json, Class<T> cls){
return mGson.fromJson(json, cls);
}
public <T> String toJson(Object mObject){
return mGson.toJson(mObject);
}
}

图片转String 工具类：

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.Bitmap.CompressFormat;
import android.util.Base64;
/**
* Created by LanYan on 2015/11/17.
*/
public class UploadImageHelper {

private static UploadImageHelper instance;

public UploadImageHelper() {

}

public static UploadImageHelper getInstance() {

if (instance == null) {
synchronized (UploadImageHelper.class) {
if (instance == null) {
instance = new UploadImageHelper();
}
}
}
return instance;
}

/**
* The picture file is transformed into a String
* @param file
* @return String
*/
public String getStringWithFile(File file) {
InputStream in = null;
byte[] data = null;
try {
in = new FileInputStream(file);
data = new byte[in.available()];
in.read(data);
in.close();
} catch (IOException e) {
e.printStackTrace();
}

return Base64.encodeToString(data, 0);
}

/**
* The Bitmap is transformed into a String
* @param bitmap
* @return String
*/
public String getStringWithBitmap(Bitmap bitmap)
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 100, baos);
byte[] appicon = baos.toByteArray();
return Base64.encodeToString(appicon, Base64.DEFAULT);

}

/**
* According to the image path, the image is transformed into a String
* @param url
* @return String
*/
public String getStringWithImageUrl(String url)
{
Bitmap mBitmap=BitmapFactory.decodeFile(url);
mBitmap=zipImage(mBitmap, 200, 200);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
mBitmap.compress(CompressFormat.PNG, 100, baos);
byte[] appicon = baos.toByteArray();
return Base64.encodeToString(appicon, Base64.DEFAULT);

}

/**
* The compressed image
* @param bgimage
* @param newWidth
* @param newHeight
* @return Bitmap
*/
public Bitmap zipImage(Bitmap bgimage, double newWidth,
double newHeight) {
float width = bgimage.getWidth();
float height = bgimage.getHeight();
Matrix matrix = new Matrix();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
matrix.postScale(scaleWidth, scaleHeight);
Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width,
(int) height, matrix, true);
return bitmap;
}
}

Http请求响应类封装解析：

import java.io.Serializable;
import java.util.ArrayList;

import com.example.http.RespMessage;
/**
* Request response bean
* Created by LanYan on 2015/11/17.
*/
public class ResponseBean extends RespMessage implements Serializable {

/**
*
*/
private static final long serialVersionUID = -3190468559588437672L;

private boolean hasNext;

public boolean isHasNext() {
return hasNext;
}

public void setHasNext(boolean hasNext) {
this.hasNext = hasNext;
}

public <T> T getResultObject(Class<T> cls) {

return GsonHelper.getInstance().fromJsonObject(getData(), cls);
}

public <T> ArrayList<T> getResultList(Class<T> cls) {

ArrayList<T> mList = GsonHelper.getInstance().fromJsonList(getData(),
cls);
setHasNext(hasNextPage(mList));

return mList;
}

public static long getSerialversionuid() {
return serialVersionUID;
}

public boolean getStatus() {
return "00000000".equals(getRespCode()) ? true : false;
}

public <T> boolean hasNextPage(ArrayList<T> mList) {

if (mList == null || mList.size() < 10) {
return false;
} else {
return true;
}
}

}

封装可读性接口：

/**
* Created by LanYan on 2015/11/17.
*/
public enum Iinterface {

login(
/** 登录*/
"login",
/** 登录账户、密码 */
new String[]{
/**登录手机号(需要MD5)*/
"userName",
/**登录密码*/
"password"
}),
loading(
/**启动界面Loading初始数据*/
"",
null
);
private Iinterface(String requestUrl,
String[] postKey) {
this.postKey = postKey;
this.requestUrl = requestUrl;
}

private String requestUrl;
private String[] postKey = null;
public static final int ipIndex=23;
public static final String host = "http://192.168.3."+ipIndex+":8080/xxxx/";

public String[] getRequestpostKey() {

return postKey;
}

public String getRequestUrl() {

return host + requestUrl;
}
}

SharedPeference简单封装：

import java.util.ArrayList;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;

import com.huianrong.app.http.GsonHelper;

@SuppressLint("CommitPrefEdits")
public class SharedPeferenceManager {

private static SharedPeferenceManager instance;
private static Context mContext;

public SharedPeferenceManager() {

}

public static SharedPeferenceManager getInstance(Context context) {
mContext = context;
if (instance == null) {
synchronized (SharedPeferenceManager.class) {
if (instance == null) {
instance = new SharedPeferenceManager();
}
}
}

return instance;
}

public <T> T readObject(String tableName, String key, Class<T> cls) {

String json = null;
json = getSharedPreference(tableName).getString(key, null);

return json==null?null:GsonHelper.getInstance().fromJsonObject(json, cls);
}

public <T> ArrayList<T> readList(String tableName,String key, Class<T> cls) {
String json = null;
json = getSharedPreference(tableName).getString(key, null);

return GsonHelper.getInstance().fromJsonList(json, cls);
}

public <T> void saveOrUpdateObject(String tableName, String key, T t) {

addObject(tableName, key, t, null);
}

public <T> void saveOrUpdateList(String tableName, String key,
ArrayList<T> mList) {

addList(tableName, key, mList, null);
}

public <T> void addObject(String tableName, String key, T t,
Class<T> cls) {
SharedPreferences mSharedPreferences =getSharedPreference(tableName);
Editor mEditor=getEditor(mSharedPreferences);
if(cls==null){
mEditor.putString(key, GsonHelper.getInstance().toJson(t));
}else {
String requestJson=mSharedPreferences.getString(key, null);
ArrayList<T> mList=new ArrayList<T>();
if(requestJson!=null){
mList=GsonHelper.getInstance().fromJsonList(requestJson, cls);
}
mList.add(t);
mEditor.putString(key, GsonHelper.getInstance().toJson(mList));
}
mEditor.commit();
}

public <T> void addList(String tableName, String key,
ArrayList<T> list, Class<T> cls) {

SharedPreferences mSharedPreferences =getSharedPreference(tableName);
Editor mEditor=getEditor(mSharedPreferences);
if(cls==null){
mEditor.putString(key, GsonHelper.getInstance().toJson(list));
}else {
String requestJson=mSharedPreferences.getString(key, null);
ArrayList<T> mList=new ArrayList<T>();
if(requestJson!=null){
mList=GsonHelper.getInstance().fromJsonList(requestJson, cls);
}
mList.addAll(list);
mEditor.putString(key, GsonHelper.getInstance().toJson(mList));
}
mEditor.commit();

}

public SharedPreferences getSharedPreference(String tableName) {

return mContext.getSharedPreferences(tableName, Activity.MODE_PRIVATE);
}

public Editor getEditor(String tableName) {

return getSharedPreference(tableName).edit();
}

public Editor getEditor(SharedPreferences mSharedPreferences) {

return mSharedPreferences.edit();
}
}

下面该是BaseFragment了：

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;

import com.lidroid.xutils.ViewUtils;

/**
* Created by LanYan on 2015/11/17.
*/
public abstract class BaseFragment extends Fragment {

View contentView;
protected FragmentActivity activity;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

if(contentView==null){
contentView=inflater.inflate(setContentViewId(),null);
ViewUtils.inject(this,contentView);
initiazed();
}
return contentView;
}

@Override
public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
return super.onCreateAnimation(transit, enter, nextAnim);
}

/**
* onCreateView>inflater.inflate(setContentViewId(),null);
* @return R.layout.xx
*/
protected abstract int setContentViewId();

/**
* Initiazetion options
*/
protected void initiazed(){
activity=(BaseFragmentActivity)getActivity();
}
}

有了一系列的基类可以帮助我们简化开发，下面是一个小的simple:

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.view.WindowManager;

import com.huianrong.app.base.BaseFragmentActivity;
import com.huianrong.app.fragment.LoadingFragment;

public class SplashActivity extends BaseFragmentActivity {

@Override
public void applyTheme() {
super.applyTheme();
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

/**
* When the activity call the setContentView (int layout) method, this method is called to return to the layout
* 当activity 调用setContentView（int layout） 方法时，调用此方法返回Layout
*
* @return R.layout.xx
*/
@Override
public int setContentViewId() {
return R.layout.activity_splash;
}

@Override
public void initiazed() {
super.initiazed();
replaceFragment(R.id.splash_frameLayout,LoadingFragment.class);
}
}

下面是一个基于xutils http模块重新打包封装后的一个post请求实例：

InterfaceManager manager=InterfaceManager.getInstance();
manager.login(new String[]{"15828845121","12345"}, new HuiRequestCallBack() {
@Override
public void huiSuccess(ResponseBean response) {
UserBean mUserBean=response.getResultObject(UserBean.class);
}

@Override
public void huiFailure(Exception e, String message) {

}
});

零零乱乱的一地思绪，总结出：开发需要Fragment系列：BaseFragmentActivity、BaseFragment、FragmentHelper，Activity系列：BaseActivity、BaseView、BaseDialogFragment、BasePopupWindow、（弹出视图通过BaseView获取View视图传入弹出视图例如BaseDialogFragment等）、BaseBean等待；还需要辅助工具类：CheckInputHelper、CacheHelper等。同时Http网络请求模块需要封装请求，图片注意缓存，那么写好这些东西，考虑清楚项目需求就可以进入开发了，当开发的app程序多了，就会发现很多通用功能，而且每个app的更新会让用户体验不好，我们就应该考虑插件化开发，模块化。我不知道我的技术目前还在什么阶段，但是我知道我还是个菜逼，哎，大腿难求！！