出现问题：在详情页以及内页，少数用户获取用户id时出现空指针
分析：
1.用户保存不应该存在问题
如果用户保存出问题，则列表页就应该出现问题，而非详情页。
2.网络获取数据不应该存在问题
如果网络获取数据错，则所有用户都会出现问题，而非部分用户，并且应该是列表页出问题。
3.n那么应是获取数据的时候出了问题，因为获取用户的时候是这样写的：
public void getUser(String id){
for(int i = 0; i < users.length; i++){
if(users.get(i).getID() == id){
return user;
}
}
return null;
}
所以，这里有个猜想，应该是传入的id有问题，id是通过一个封装类从sharepreferences获取的，那么，很有可能是这个类出问题，所以我一直盯着这个类看，终于找到了问题所在，大家来找茬，你看一下能找到问题吗？
public class ShareUtils
private String shareName = "A";
private int shareMode = Context.MODE_PRIVATE;
private SharedPreferences sharedPreferences;
private SharedPreferences.Editor editor;
private static ShareUtils shareUtils;
private ShareUtils(){}
public static ShareUtils getInstance(){
if(shareUtils == null)
shareUtils = new ShareUtils();
return shareUtils;
}
private SharedPreferences getShare(){
if(sharedPreferences == null){
sharedPreferences = App.getSuperContext().getSharedPreferences(shareName,shareMode);
}
return sharedPreferences;
}
public ShareUtils resetShare(){
commit();
this.shareName = "B";
this.shareMode = Context.MODE_PRIVATE;
return this;
}
/**
* ShareUtils在同一个类中要调用不同share,进行重置
* @param shareName
* @return
public ShareUtils resetShare(String shareName){
commit();
this.shareName = shareName;
this.shareMode = Context.MODE_PRIVATE;
return this;
}
/**
* ShareUtils在同一个类中要调用不同share,进行重置
* @param shareName
* @return
public ShareUtils resetShare(String shareName, int shareMode){
commit();
this.shareName = shareName;
this.shareMode = shareMode;
return this;
}
private SharedPreferences.Editor getEditor(){
if(editor == null){
editor = getShare().edit();
}
return editor;
}
public ShareUtils set(String name,int intValue){
getEditor().putInt(name,intValue);
return this;
}
public ShareUtils set(String name,long longValue){
getEditor().putLong(name,longValue);
return this;
}
public ShareUtils set(String name,boolean boolValue){
getEditor().putBoolean(name,boolValue);
return this;
}
public ShareUtils set(String name,float floatValue){
getEditor().putFloat(name,floatValue);
return this;
}
public ShareUtils set(String name,String stringValue){
getEditor().putString(name,stringValue);
return this;
}
public ShareUtils set(String name, Set<String> stringSet){
getEditor().putStringSet(name,stringSet);
return this;
}
public void commit(){
if(editor!=null){
editor.apply();
}
}
public void clear(){
getEditor().clear().apply();
}
public void remove(String name){
getEditor().remove(name).apply();
}
public int getInt(String name){
return getShare().getInt(name,0);
}
public int getInt(String name,int defaultValue){
return getShare().getInt(name,defaultValue);
}
public long getLong(String name){
return getShare().getLong(name,0);
}
public long getLong(String name,long defaultValue){
return getShare().getLong(name,defaultValue);
}
public boolean getBoolean(String name){
return getShare().getBoolean(name,false);
}
public boolean getBoolean(String name,boolean defaultValue){
return getShare().getBoolean(name,defaultValue);
}
public float getFloat(String name){
return getShare().getFloat(name,0f);
}
public float getFloat(String name,float defaultValue){
return getShare().getFloat(name,defaultValue);
}
public String getString(String name){
return getShare().getString(name,"");
}
public String getString(String name,String defaultValue){
return getShare().getString(name,defaultValue);
}
public Set<String> getSet(String name){
return getShare().getStringSet(name,null);
}
public Set<String> getSet(String name,Set<String> defaultValue){
return
此处给你5分钟找一下。。。然后突然想到了，问题在于：
ShareUtils.getInstance().resetShare().getString(“xx”);
和
ShareUtils.getInstance().resetShare(“xx”).getString(“xx”);
两句一起用的时候，resetShare没有起作用！因为此时resetShare虽然更改了shareName，但是没有重置SharePreferences所以错了，当SharePreferences变量被回收以后，重新获取，就会找不到变量了，因为shareName保存的有错了，所以每个resetShare都要加上如下判断才合理：
if(!this.shareName.equals(shareName) || this.shareMode!=shareMode){
sharedPreferences = null;
}整体如下：
public class ShareUtils
private String shareName = "A";
private int shareMode = Context.MODE_PRIVATE;
private SharedPreferences sharedPreferences;
private SharedPreferences.Editor editor;
private static ShareUtils shareUtils;
private ShareUtils(){}
public static ShareUtils getInstance(){
if(shareUtils == null)
shareUtils = new ShareUtils();
return shareUtils;
}
private SharedPreferences getShare(){
if(sharedPreferences == null){
sharedPreferences = App.getSuperContext().getSharedPreferences(shareName,shareMode);
}
return sharedPreferences;
}
public ShareUtils resetShare(){
commit();
if(!this.shareName.equals("B") || this.shareMode!=Context.MODE_PRIVATE){
sharedPreferences = null;
}
this.shareName = "B";
this.shareMode = Context.MODE_PRIVATE;
return this;
}
/**
* ShareUtils在同一个类中要调用不同share,进行重置
* @param shareName
* @return
public ShareUtils resetShare(String shareName){
commit();
if(!this.shareName.equals(shareName) || this.shareMode!=Context.MODE_PRIVATE){
sharedPreferences = null;
editor = null;
}
this.shareName = shareName;
this.shareMode = Context.MODE_PRIVATE;
return this;
}
/**
* ShareUtils在同一个类中要调用不同share,进行重置
* @param shareName
* @return
public ShareUtils resetShare(String shareName, int shareMode){
commit();
if(!this.shareName.equals(shareName) || this.shareMode!=shareMode){
sharedPreferences = null;
editor = null;
}
this.shareName = shareName;
this.shareMode = shareMode;
return this;
}
private SharedPreferences.Editor getEditor(){
if(editor == null){
editor = getShare().edit();
}
return editor;
}
public ShareUtils set(String name,int intValue){
getEditor().putInt(name,intValue);
return this;
}
public ShareUtils set(String name,long longValue){
getEditor().putLong(name,longValue);
return this;
}
public ShareUtils set(String name,boolean boolValue){
getEditor().putBoolean(name,boolValue);
return this;
}
public ShareUtils set(String name,float floatValue){
getEditor().putFloat(name,floatValue);
return this;
}
public ShareUtils set(String name,String stringValue){
getEditor().putString(name,stringValue);
return this;
}
public ShareUtils set(String name, Set<String> stringSet){
getEditor().putStringSet(name,stringSet);
return this;
}
public void commit(){
if(editor!=null){
editor.apply();
}
}
public void clear(){
getEditor().clear().apply();
}
public void remove(String name){
getEditor().remove(name).apply();
}
public int getInt(String name){
return getShare().getInt(name,0);
}
public int getInt(String name,int defaultValue){
return getShare().getInt(name,defaultValue);
}
public long getLong(String name){
return getShare().getLong(name,0);
}
public long getLong(String name,long defaultValue){
return getShare().getLong(name,defaultValue);
}
public boolean getBoolean(String name){
return getShare().getBoolean(name,false);
}
public boolean getBoolean(String name,boolean defaultValue){
return getShare().getBoolean(name,defaultValue);
}
public float getFloat(String name){
return getShare().getFloat(name,0f);
}
public float getFloat(String name,float defaultValue){
return getShare().getFloat(name,defaultValue);
}
public String getString(String name){
return getShare().getString(name,"");
}
public String getString(String name,String defaultValue){
return getShare().getString(name,defaultValue);
}
public Set<String> getSet(String name){
return getShare().getStringSet(name,null);
}
public Set<String> getSet(String name,Set<String> defaultValue){
return
解决小概率bug依据是三点：1.查看统计结果，找到出现问题的节点，以及出现问题的机型。如果机型>=6.0，那么应该是权限问题或者是回收问题，如果特定机型款，则需要特殊的机型进行测试，还原测试。2.推理，排查不可能的点，检查剩下的点。3.询问用户，bug的触发方式，机型。
