代码二次封装-xUtils(android)
2015-07-15 12:48
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通常我们会引用许多lib
并且会出现lib 与我们的功能只差一点点 这样的情况我们最好不要去修改源码 而是进行二次封装
举例我使用 xUtils的二次封装 此处说明我是搞ios的 这个是android 今天mac 机子没网 蛋疼
使用到pulltorefresh 和 xUtils
网络封装
由于此处是没有文件处理所以我把参数转换里面file给去掉了 如果需要自行加上即可
在此贴出部分上面用到的代码
意义就在于 对自身的项目需求 做出特殊的代码比如 我碰到的之前一个项目 他后台是thinkPHP的所以参数都是:网址+/?a=** 特殊情况做出处理
还有就是比如用户信息 请求得同时可以在 自己写的二次封装方法中写 更多的针对这一个api的操作 比如 db操作甚至关系的判断等
我封装的一个 BaseAdapter
继承后自需要实现几个方法即可
基本代码意思是
翻页、第一页的缓存、等通用的都让baseclass处理
继承后只需要实现
网络请求时需要的数据、view的初始化以及刷新的内容(会自动调用)、以及其他格外处理比如Item点击事件
能用Fragment 的使用Fragment 碎片化 谁让老板常改需求呢 你懂得
不使用v4包内的fragment 而想使用 v4包的ViewPager
FragmentStatePagerAdapter
BitmapUtils 二次封装 主要是 有部分url 没有http部分 做少许处理
好了 去吃中午饭了。。。。。
并且会出现lib 与我们的功能只差一点点 这样的情况我们最好不要去修改源码 而是进行二次封装
举例我使用 xUtils的二次封装 此处说明我是搞ios的 这个是android 今天mac 机子没网 蛋疼
使用到pulltorefresh 和 xUtils
网络封装
由于此处是没有文件处理所以我把参数转换里面file给去掉了 如果需要自行加上即可
public class ApiHttpUtil { final public static String base_url_api = Constants.base_url_api; private String api_url; HttpApiCallBack callBack; Map<String, String> paramsMap; CacheEntity cacheEntity; Long timeOut = 0L; public ApiHttpUtil() { } public ApiHttpUtil(HttpApiCallBack callBack) { this.callBack = callBack; this.cacheEntity = new CacheEntity(); } public ApiHttpUtil(String url, HttpApiCallBack callBack) { this.api_url = url; this.callBack = callBack; this.cacheEntity = new CacheEntity(); } public String getApiUrl() { if (StringUtils.isEmpty(api_url)) { return base_url_api + "?"; } if (api_url.startsWith("http")) { return api_url; } return base_url_api + "/" + api_url; } public String strValue(Object obj) { if (obj instanceof String) { return (String) obj; } else if (obj instanceof Integer) { return Integer.toString((Integer) obj); } else if (obj instanceof Double) { return Double.toString((Double) obj); } else { // TODO 其他 object 类转换 http string } return String.valueOf(obj); } public void getObjs(Object... objs) { Map<String, Object> map = getMap(objs); get(map); } public void postObjs(Object... objs) { Map<String, Object> map = getMap(objs); post(map); } /* * key --- String Integer Double value -- +File */ public Map<String, Object> getMap(Object[] objs) { Map<String, Object> map = new HashMap<String, Object>(); if (objs.length % 2 == 0) { for (int i = 0; i < objs.length; i += 2) { try { String key = (String) strValue(objs[i]); Object value = null; if (objs.length > i + 1) { Object objs2 = objs[i + 1]; value = strValue(objs2); } if (value instanceof String) { if (!StringUtils.isEmpty((String) value) && !StringUtils.isEmpty(key)) { map.put(key, value); } } else if (value instanceof File) { map.put(key, value); } } catch (Exception e) { } } } return map; } public void get() { get(null); } public void post() { post(null); } public ApiHttpUtil setTimeOut(int second) { this.timeOut = second * 1000L; return this; } public void post(Map<String, Object> map) { RequestParams params = new RequestParams(); if (map != null) { for (Entry<String, Object> entry : map.entrySet()) { if (entry.getValue() instanceof String) { params.addBodyParameter(entry.getKey(), (String) entry.getValue()); } else { params.addBodyParameter(entry.getKey(), strValue(entry.getValue())); } } } if (timeOut <= 0 && !useCache(map)) { send(HttpRequest.HttpMethod.POST, params); } } public void get(Map<String, Object> map) { RequestParams params = new RequestParams(); if (map != null) { for (Entry<String, Object> entry : map.entrySet()) { if (entry.getValue() instanceof String) { params.addQueryStringParameter(entry.getKey(), (String) entry.getValue()); } else { params.addQueryStringParameter(entry.getKey(), strValue(entry.getValue())); } } } if (timeOut <= 0 && !useCache(map)) { send(HttpRequest.HttpMethod.GET, params); } } public boolean useCache(Map<String, Object> map) { this.cacheEntity.setKey(getApiUrl() + map.toString()); if (AppContext.mInstance != null) { if (!StringUtils.isEmpty(this.cacheEntity.getValue())) { if (!AppUtils.isNetworkAvailable(AppContext.mInstance)) { AppUtils.openNetworkSettings(AppContext.mInstance); onSuccess(this.cacheEntity.getCacheValue()); return true; } } String result = this.cacheEntity.getValue(timeOut); if (!StringUtils.isEmpty(result)) { onSuccess(result); return true; } } return false; } public void send(HttpRequest.HttpMethod method, RequestParams params) { HttpUtils http = new HttpUtils(); http.send(method, getApiUrl(), params, new RequestCallBack<String>() { @Override public void onStart() { callBack.onStart(); } @Override public void onLoading(long total, long current, boolean isUploading) { callBack.onLoading(total, current, isUploading); } @Override public void onCancelled() { callBack.onCancelled(); } @Override public void onSuccess(ResponseInfo<String> responseInfo) { ApiHttpUtil.this.onSuccess(responseInfo.result); } @Override public void onFailure(HttpException error, String msg) { callBack.onFailure(error, msg); } }); } public boolean handleError(String result) { // TODO return false; } public void onSuccess(String result) { if (handleError(result)) { return; } if (callBack.onSuccess(result)) { cacheEntity.setValue(result); return; } try { JSONObject jsonResults = new JSONObject(result); callBack.onSuccess(jsonResults); cacheEntity.setValue(result); } catch (Exception e) { callBack.onFailure(e, "JSONObject 解析错误"); e.printStackTrace(); } } }
在此贴出部分上面用到的代码
/* * 是否有网 */ public static boolean isNetworkAvailable(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity == null) { Log.i("NetWorkState", "Unavailabel"); return false; } else { NetworkInfo[] info = connectivity.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].getState() == NetworkInfo.State.CONNECTED) { Log.i("NetWorkState", "Availabel"); return true; } } } } return false; } /* * 打开网络设置界面请求 */ public static AlertDialog dialog_networkSettings; public static void openNetworkSettings(final Context content) { if (dialog_networkSettings == null) { dialog_networkSettings = new AlertDialog.Builder(content) .setTitle("开启网络服务") .setMessage("本软件需要使用网络资源,是否开启网络?") .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Go to the activity of settings of wireless if (android.os.Build.VERSION.SDK_INT > 13) { content.startActivity(new Intent( android.provider.Settings.ACTION_SETTINGS)); } else { content.startActivity(new Intent( android.provider.Settings.ACTION_WIRELESS_SETTINGS)); } dialog.cancel(); } }) .setNegativeButton("否", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }).show(); }else{ if (!dialog_networkSettings.isShowing()) { dialog_networkSettings.show(); } } }
意义就在于 对自身的项目需求 做出特殊的代码比如 我碰到的之前一个项目 他后台是thinkPHP的所以参数都是:网址+/?a=** 特殊情况做出处理
还有就是比如用户信息 请求得同时可以在 自己写的二次封装方法中写 更多的针对这一个api的操作 比如 db操作甚至关系的判断等
我封装的一个 BaseAdapter
package yangdc.common.fragment.base; import org.json.JSONException; import org.json.JSONObject; import yangdc.common.api.ApiCallBack; import yangdc.common.utils.BitmapUtil; import yangdc.common.utils.StringUtils; import yangdc.common.utils.ToastUtils; import com.handmark.pulltorefresh.library.PullToRefreshBase; import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode; import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener; import com.handmark.pulltorefresh.library.PullToRefreshListView; import com.lidroid.xutils.bitmap.PauseOnScrollListener; import android.content.Context; import android.content.SharedPreferences; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; public abstract class BaseAdapter<EntityT, ViewT> extends ArrayAdapter<EntityT> { public Context context; int resource; public ApiCallBack api; public int page = 0; ListView listView; public BitmapUtil bitmapUtil; boolean mHasRequestedMore;// 正在请求 public boolean isDropDown = true;// 是否是 刷新 PullToRefreshListView pullToRefreshListView; public BaseAdapter(Context context,int resource,PullToRefreshListView pullToRefreshListView) { super(context, resource); this.pullToRefreshListView = pullToRefreshListView; init(context, resource); } public BaseAdapter(Context context, int resource, ListView listView) { super(context, resource); this.listView = listView; init(context, resource); } public void init(Context context, int resource){ this.context = context; this.resource = resource; initAdapter(); initbitmapUtil(); initListViewListener(); } public void initAdapter(){ if (listView != null) { listView.setAdapter(this); } else if (pullToRefreshListView != null) { pullToRefreshListView.setAdapter(this); } } public void initbitmapUtil() { bitmapUtil = new BitmapUtil(context); // 控制滑动和快速滑动过程中时候暂停加载图片 if (listView != null) { listView.setOnScrollListener(new PauseOnScrollListener(bitmapUtil,false, true)); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { OnItemClick(getItem(position-1)); } }); } else if (pullToRefreshListView != null) { pullToRefreshListView.setOnScrollListener(new PauseOnScrollListener(bitmapUtil,false, true)); pullToRefreshListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { OnItemClick(getItem(position-1)); } }); } } public void OnItemClick(EntityT T){ } public void initListViewListener() { if (pullToRefreshListView != null) { pullToRefreshListView.setMode(Mode.BOTH); pullToRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() { @Override public void onRefresh(PullToRefreshBase<ListView> refreshView) { if (refreshView.isHeaderShown()) { isDropDown = true; } else { isDropDown = false; } onLoadMoreItems(); } }); } if (onLoadMoreImmediately()) { onLoadMoreItems(); } } public boolean onLoadMoreImmediately() { return true; } private void complete(){ mHasRequestedMore = false; if (pullToRefreshListView != null) { pullToRefreshListView.onRefreshComplete(); } } public void onLoadMoreItems() { if (mHasRequestedMore) { // 上次请求 还未结束 ToastUtils.show(context, "正在努力加载中..."); } else { final int oldPage = page; if (isDropDown) { page = 1; } else { page++; } if (api == null) { api = new ApiCallBack() { @Override public void onSuccessJson(JSONObject jsonObject) { complete(); if (page == 1) { saveCache(jsonObject); clear();//TODO 判断是否 有新数据 如果是只新增则 添加到头部 其他情况添加到尾部 } BaseAdapter.this.onSuccessJson(jsonObject); } @Override public void onFailure(Exception e, String msg) { complete(); mHasRequestedMore = false; ToastUtils.show(context, msg); page = oldPage; } @Override public void onReady() { if (page==1) { JSONObject result = loadJSONCache(); if (result != null) { onSuccessJson(result); } } } }; } mHasRequestedMore = true; PostObjs(); } } public void onSuccess(String result){ try { onSuccessJson(new JSONObject(result)); } catch (JSONException e) { e.printStackTrace(); } } public abstract void onSuccessJson(JSONObject result); public String URL(){ return null; } public String PostActionMark(){ return api.jsonAction; } public abstract void PostObjs(); public abstract ViewT initView(View convertView); public abstract void updateView(ViewT convertView, EntityT entity); public SharedPreferences getSharedPreferences(){ return context.getSharedPreferences( getClass().getName() , Context.MODE_PRIVATE); } public void saveCache(String cacheStr){ getSharedPreferences().edit().putString(PostActionMark(), cacheStr).commit(); } public void saveCache(JSONObject cacheJson){ saveCache(cacheJson.toString()); } public String loadCache(){ SharedPreferences preferences = getSharedPreferences(); return preferences.getString(PostActionMark(), ""); } public JSONObject loadJSONCache() { String jsonStr = loadCache(); JSONObject jsonObject = null; if (!StringUtils.isEmpty(jsonStr)) { try { jsonObject = new JSONObject(jsonStr); } catch (JSONException e) { e.printStackTrace(); } } return jsonObject; } @SuppressWarnings("unchecked") @Override public View getView(int position, View convertView, ViewGroup parent) { ViewT adapterView = null; if (convertView == null) { convertView = LayoutInflater.from(getContext()).inflate(resource, null); adapterView = initView(convertView); convertView.setTag(adapterView); } else { adapterView = (ViewT) convertView.getTag(); } updateView(adapterView, getItem(position)); return convertView; } }
继承后自需要实现几个方法即可
基本代码意思是
翻页、第一页的缓存、等通用的都让baseclass处理
继承后只需要实现
网络请求时需要的数据、view的初始化以及刷新的内容(会自动调用)、以及其他格外处理比如Item点击事件
能用Fragment 的使用Fragment 碎片化 谁让老板常改需求呢 你懂得
不使用v4包内的fragment 而想使用 v4包的ViewPager
FragmentStatePagerAdapter
/* * Copyright (C) 2011 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package yangdc.common.fragment.base; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.os.Parcelable; import android.support.v4.view.PagerAdapter; import android.util.Log; import android.view.View; import android.view.ViewGroup; /** * Implementation of {@link android.support.v4.view.PagerAdapter} that * represents each page as a {@link Fragment} that is persistently * kept in the fragment manager as long as the user can return to the page. * * <p>This version of the pager is best for use when there are a handful of * typically more static fragments to be paged through, such as a set of tabs. * The fragment of each page the user visits will be kept in memory, though its * view hierarchy may be destroyed when not visible. This can result in using * a significant amount of memory since fragment instances can hold on to an * arbitrary amount of state. For larger sets of pages, consider * {@link FragmentStatePagerAdapter}. * * <p>When using FragmentPagerAdapter the host ViewPager must have a * valid ID set.</p> * * <p>Subclasses only need to implement {@link #getItem(int)} * and {@link #getCount()} to have a working adapter. * * <p>Here is an example implementation of a pager containing fragments of * lists: * * {@sample development/samples/Support4Demos/src/com/example/android/supportv4/app/FragmentPagerSupport.java * complete} * * <p>The <code>R.layout.fragment_pager</code> resource of the top-level fragment is: * * {@sample development/samples/Support4Demos/res/layout/fragment_pager.xml * complete} * * <p>The <code>R.layout.fragment_pager_list</code> resource containing each * individual fragment's layout is: * * {@sample development/samples/Support4Demos/res/layout/fragment_pager_list.xml * complete} */ public abstract class FragmentPagerAdapter extends PagerAdapter { private static final String TAG = "FragmentPagerAdapter"; private static final boolean DEBUG = false; private final FragmentManager mFragmentManager; private FragmentTransaction mCurTransaction = null; private Fragment mCurrentPrimaryItem = null; public FragmentPagerAdapter(FragmentManager fm) { mFragmentManager = fm; } /** * Return the Fragment associated with a specified position. */ public abstract Fragment getItem(int position); @Override public void startUpdate(ViewGroup container) { } @Override public Object instantiateItem(ViewGroup container, int position) { if (mCurTransaction == null) { mCurTransaction = mFragmentManager.beginTransaction(); } final long itemId = getItemId(position); // Do we already have this fragment? String name = makeFragmentName(container.getId(), itemId); Fragment fragment = mFragmentManager.findFragmentByTag(name); if (fragment != null) { if (DEBUG) Log.v(TAG, "Attaching item #" + itemId + ": f=" + fragment); mCurTransaction.attach(fragment); } else { fragment = getItem(position); if (DEBUG) Log.v(TAG, "Adding item #" + itemId + ": f=" + fragment); mCurTransaction.add(container.getId(), fragment, makeFragmentName(container.getId(), itemId)); } if (fragment != mCurrentPrimaryItem) { fragment.setMenuVisibility(false); fragment.setUserVisibleHint(false); } return fragment; } @Override public void destroyItem(ViewGroup container, int position, Object object) { if (mCurTransaction == null) { mCurTransaction = mFragmentManager.beginTransaction(); } if (DEBUG) Log.v(TAG, "Detaching item #" + getItemId(position) + ": f=" + object + " v=" + ((Fragment)object).getView()); mCurTransaction.detach((Fragment)object); } @Override public void setPrimaryItem(ViewGroup container, int position, Object object) { Fragment fragment = (Fragment)object; if (fragment != mCurrentPrimaryItem) { if (mCurrentPrimaryItem != null) { mCurrentPrimaryItem.setMenuVisibility(false); mCurrentPrimaryItem.setUserVisibleHint(false); } if (fragment != null) { fragment.setMenuVisibility(true); fragment.setUserVisibleHint(true); } mCurrentPrimaryItem = fragment; } } @Override public void finishUpdate(ViewGroup container) { if (mCurTransaction != null) { mCurTransaction.commitAllowingStateLoss(); mCurTransaction = null; mFragmentManager.executePendingTransactions(); } } @Override public boolean isViewFromObject(View view, Object object) { return ((Fragment)object).getView() == view; } @Override public Parcelable saveState() { return null; } @Override public void restoreState(Parcelable state, ClassLoader loader) { } /** * Return a unique identifier for the item at the given position. * * <p>The default implementation returns the given position. * Subclasses should override this method if the positions of items can change.</p> * * @param position Position within this adapter * @return Unique identifier for the item at position */ public long getItemId(int position) { return position; } private static String makeFragmentName(int viewId, long id) { return "android:switcher:" + viewId + ":" + id; } } /* * Copyright (C) 2011 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package yangdc.common.fragment.base; import java.util.ArrayList; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.view.PagerAdapter; import android.util.Log; import android.view.View; import android.view.ViewGroup; /** * Implementation of {@link android.support.v4.view.PagerAdapter} that * uses a {@link Fragment} to manage each page. This class also handles * saving and restoring of fragment's state. * * <p>This version of the pager is more useful when there are a large number * of pages, working more like a list view. When pages are not visible to * the user, their entire fragment may be destroyed, only keeping the saved * state of that fragment. This allows the pager to hold on to much less * memory associated with each visited page as compared to * {@link FragmentPagerAdapter} at the cost of potentially more overhead when * switching between pages. * * <p>When using FragmentPagerAdapter the host ViewPager must have a * valid ID set.</p> * * <p>Subclasses only need to implement {@link #getItem(int)} * and {@link #getCount()} to have a working adapter. * * <p>Here is an example implementation of a pager containing fragments of * lists: * * {@sample development/samples/Support13Demos/src/com/example/android/supportv13/app/FragmentStatePagerSupport.java * complete} * * <p>The <code>R.layout.fragment_pager</code> resource of the top-level fragment is: * * {@sample development/samples/Support13Demos/res/layout/fragment_pager.xml * complete} * * <p>The <code>R.layout.fragment_pager_list</code> resource containing each * individual fragment's layout is: * * {@sample development/samples/Support13Demos/res/layout/fragment_pager_list.xml * complete} */ public abstract class FragmentStatePagerAdapter extends PagerAdapter { private static final String TAG = "FragmentStatePagerAdapter"; private static final boolean DEBUG = false; private final FragmentManager mFragmentManager; private FragmentTransaction mCurTransaction = null; private ArrayList<Fragment.SavedState> mSavedState = new ArrayList<Fragment.SavedState>(); private ArrayList<Fragment> mFragments = new ArrayList<Fragment>(); private Fragment mCurrentPrimaryItem = null; public FragmentStatePagerAdapter(FragmentManager fm) { mFragmentManager = fm; } /** * Return the Fragment associated with a specified position. */ public abstract Fragment getItem(int position); @Override public void startUpdate(ViewGroup container) { } @Override public Object instantiateItem(ViewGroup container, int position) { // If we already have this item instantiated, there is nothing // to do. This can happen when we are restoring the entire pager // from its saved state, where the fragment manager has already // taken care of restoring the fragments we previously had instantiated. if (mFragments.size() > position) { Fragment f = mFragments.get(position); if (f != null) { return f; } } if (mCurTransaction == null) { mCurTransaction = mFragmentManager.beginTransaction(); } Fragment fragment = getItem(position); if (DEBUG) Log.v(TAG, "Adding item #" + position + ": f=" + fragment); if (mSavedState.size() > position) { Fragment.SavedState fss = mSavedState.get(position); if (fss != null) { fragment.setInitialSavedState(fss); } } while (mFragments.size() <= position) { mFragments.add(null); } fragment.setMenuVisibility(false); fragment.setUserVisibleHint(false); mFragments.set(position, fragment); mCurTransaction.add(container.getId(), fragment); return fragment; } @Override public void destroyItem(ViewGroup container, int position, Object object) { Fragment fragment = (Fragment)object; if (mCurTransaction == null) { mCurTransaction = mFragmentManager.beginTransaction(); } if (DEBUG) Log.v(TAG, "Removing item #" + position + ": f=" + object + " v=" + ((Fragment)object).getView()); while (mSavedState.size() <= position) { mSavedState.add(null); } mSavedState.set(position, mFragmentManager.saveFragmentInstanceState(fragment)); mFragments.set(position, null); mCurTransaction.remove(fragment); } @Override public void setPrimaryItem(ViewGroup container, int position, Object object) { Fragment fragment = (Fragment)object; if (fragment != mCurrentPrimaryItem) { if (mCurrentPrimaryItem != null) { mCurrentPrimaryItem.setMenuVisibility(false); mCurrentPrimaryItem.setUserVisibleHint(false); } if (fragment != null) { fragment.setMenuVisibility(true); fragment.setUserVisibleHint(true); } mCurrentPrimaryItem = fragment; } } @Override public void finishUpdate(ViewGroup container) { if (mCurTransaction != null) { mCurTransaction.commitAllowingStateLoss(); mCurTransaction = null; mFragmentManager.executePendingTransactions(); } } @Override public boolean isViewFromObject(View view, Object object) { return ((Fragment)object).getView() == view; } @Override public Parcelable saveState() { Bundle state = null; if (mSavedState.size() > 0) { state = new Bundle(); Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()]; mSavedState.toArray(fss); state.putParcelableArray("states", fss); } for (int i=0; i<mFragments.size(); i++) { Fragment f = mFragments.get(i); if (f != null) { if (state == null) { state = new Bundle(); } String key = "f" + i; mFragmentManager.putFragment(state, key, f); } } return state; } @Override public void restoreState(Parcelable state, ClassLoader loader) { if (state != null) { Bundle bundle = (Bundle)state; bundle.setClassLoader(loader); Parcelable[] fss = bundle.getParcelableArray("states"); mSavedState.clear(); mFragments.clear(); if (fss != null) { for (int i=0; i<fss.length; i++) { mSavedState.add((Fragment.SavedState)fss[i]); } } Iterable<String> keys = bundle.keySet(); for (String key: keys) { if (key.startsWith("f")) { int index = Integer.parseInt(key.substring(1)); Fragment f = mFragmentManager.getFragment(bundle, key); if (f != null) { while (mFragments.size() <= index) { mFragments.add(null); } f.setMenuVisibility(false); mFragments.set(index, f); } else { Log.w(TAG, "Bad fragment at key " + key); } } } } } }
BitmapUtils 二次封装 主要是 有部分url 没有http部分 做少许处理
package yangdc.common.utils; import yangdc.common.AppContext; import yangdc.common.Constants; import yangdc.common.R; import android.content.Context; import android.widget.ImageView; import com.lidroid.xutils.BitmapUtils; import com.lidroid.xutils.bitmap.BitmapDisplayConfig; import com.lidroid.xutils.bitmap.core.BitmapSize; public class BitmapUtil extends BitmapUtils{ static BitmapDisplayConfig bitmapDisplayConfig = getBitmapDisplayConfig(); public BitmapUtil(Context context) { this(context, null); } public static BitmapDisplayConfig getBitmapDisplayConfig() { if (bitmapDisplayConfig == null) { bitmapDisplayConfig = new BitmapDisplayConfig(); bitmapDisplayConfig.setLoadingDrawable(AppContext.getContext().getResources().getDrawable(R.drawable.image_loading)); bitmapDisplayConfig.setLoadFailedDrawable(AppContext.getContext().getResources().getDrawable(R.drawable.image_fail)); } return bitmapDisplayConfig; } public BitmapUtil(Context context, String diskCachePath) { super(context, diskCachePath); } public void display(ImageView imageView,String url){ imageView.setImageResource(R.drawable.empty_photo); if (StringUtils.isEmpty(url)) { return; } if (!url.startsWith("http")) { url = Constants.image_url +"/"+ url; } // BitmapSize bitmapSize = new BitmapSize(imageView.getLayoutParams().width, imageView.getLayoutParams().height); // bitmapDisplayConfig.setBitmapMaxSize(bitmapSize); super.display(imageView, url ,bitmapDisplayConfig); } }
好了 去吃中午饭了。。。。。
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