Android快速开发系列 10个常用工具类.docx

1、Android快速开发系列 10个常用工具类打开大家手上的项目，基本都会有一大批的辅助类，今天特此整理出10个基本每个项目中都会使用的工具类，用于快速开发在此感谢群里给我发项目中工具类的兄弟/姐妹1、日志工具类L.javajavaview plaincopy1. packagecom.zhy.utils;2. 3. importandroid.util.Log;4. 5. /*6. *Log统一管理类7. *8. *9. *10. */11. publicclassL12. 13. 14. privateL()15. 16. /*cannotbeinstantiated*/17. thrown

2、ewUnsupportedOperationException(cannotbeinstantiated);18. 19. 20. publicstaticbooleanisDebug=true;/是否需要打印bug，可以在application的onCreate函数里面初始化21. privatestaticfinalStringTAG=way;22. 23. /下面四个是默认tag的函数24. publicstaticvoidi(Stringmsg)25. 26. if(isDebug)27. Log.i(TAG,msg);28. 29. 30. publicstaticvoidd(Str

3、ingmsg)31. 32. if(isDebug)33. Log.d(TAG,msg);34. 35. 36. publicstaticvoide(Stringmsg)37. 38. if(isDebug)39. Log.e(TAG,msg);40. 41. 42. publicstaticvoidv(Stringmsg)43. 44. if(isDebug)45. Log.v(TAG,msg);46. 47. 48. /下面是传入自定义tag的函数49. publicstaticvoidi(Stringtag,Stringmsg)50. 51. if(isDebug)52. Log.i(t

4、ag,msg);53. 54. 55. publicstaticvoidd(Stringtag,Stringmsg)56. 57. if(isDebug)58. Log.i(tag,msg);59. 60. 61. publicstaticvoide(Stringtag,Stringmsg)62. 63. if(isDebug)64. Log.i(tag,msg);65. 66. 67. publicstaticvoidv(Stringtag,Stringmsg)68. 69. if(isDebug)70. Log.i(tag,msg);71. 72. 网上看到的类，注释上应该原创作者的名字，

5、很简单的一个类；网上也有很多提供把日志记录到SDCard上的，不过我是从来没记录过，所以引入个最简单的，大家可以进行评价是否需要扩充2、Toast统一管理类javaview plaincopy1. packagecom.zhy.utils;2. 3. importandroid.content.Context;4. importandroid.widget.Toast;5. 6. /*7. *Toast统一管理类8. *9. */10. publicclassT11. 12. 13. privateT()14. 15. /*cannotbeinstantiated*/16. thrownewU

6、nsupportedOperationException(cannotbeinstantiated);17. 18. 19. publicstaticbooleanisShow=true;20. 21. /*22. *短时间显示Toast23. *24. *paramcontext25. *parammessage26. */27. publicstaticvoidshowShort(Contextcontext,CharSequencemessage)28. 29. if(isShow)30. Toast.makeText(context,message,Toast.LENGTH_SHORT

7、).show();31. 32. 33. /*34. *短时间显示Toast35. *36. *paramcontext37. *parammessage38. */39. publicstaticvoidshowShort(Contextcontext,intmessage)40. 41. if(isShow)42. Toast.makeText(context,message,Toast.LENGTH_SHORT).show();43. 44. 45. /*46. *长时间显示Toast47. *48. *paramcontext49. *parammessage50. */51. pub

8、licstaticvoidshowLong(Contextcontext,CharSequencemessage)52. 53. if(isShow)54. Toast.makeText(context,message,Toast.LENGTH_LONG).show();55. 56. 57. /*58. *长时间显示Toast59. *60. *paramcontext61. *parammessage62. */63. publicstaticvoidshowLong(Contextcontext,intmessage)64. 65. if(isShow)66. Toast.makeTex

9、t(context,message,Toast.LENGTH_LONG).show();67. 68. 69. /*70. *自定义显示Toast时间71. *72. *paramcontext73. *parammessage74. *paramduration75. */76. publicstaticvoidshow(Contextcontext,CharSequencemessage,intduration)77. 78. if(isShow)79. Toast.makeText(context,message,duration).show();80. 81. 82. /*83. *自

10、定义显示Toast时间84. *85. *paramcontext86. *parammessage87. *paramduration88. */89. publicstaticvoidshow(Contextcontext,intmessage,intduration)90. 91. if(isShow)92. Toast.makeText(context,message,duration).show();93. 94. 95. 也是非常简单的一个封装，能省则省了3、SharedPreferences封装类SPUtilsjavaview plaincopy1. packagecom.zhy

11、.utils;2. 3. importjava.lang.reflect.InvocationTargetException;4. importjava.lang.reflect.Method;5. importjava.util.Map;6. 7. importandroid.content.Context;8. importandroid.content.SharedPreferences;9. 10. publicclassSPUtils11. 12. /*13. *保存在手机里面的文件名14. */15. publicstaticfinalStringFILE_NAME=share_d

12、ata;16. 17. /*18. *保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法19. *20. *paramcontext21. *paramkey22. *paramobject23. */24. publicstaticvoidput(Contextcontext,Stringkey,Objectobject)25. 26. 27. SharedPreferencessp=context.getSharedPreferences(FILE_NAME,28. Context.MODE_PRIVATE);29. SharedPreferences.Edit

13、oreditor=sp.edit();30. 31. if(objectinstanceofString)32. 33. editor.putString(key,(String)object);34. elseif(objectinstanceofInteger)35. 36. editor.putInt(key,(Integer)object);37. elseif(objectinstanceofBoolean)38. 39. editor.putBoolean(key,(Boolean)object);40. elseif(objectinstanceofFloat)41. 42. e

14、ditor.putFloat(key,(Float)object);43. elseif(objectinstanceofLong)44. 45. editor.putLong(key,(Long)object);46. else47. 48. editor.putString(key,object.toString();49. 50. 51. SharedPreferencesCompat.apply(editor);52. 53. 54. /*55. *得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值56. *57. *paramcontext58.

15、*paramkey59. *paramdefaultObject60. *return61. */62. publicstaticObjectget(Contextcontext,Stringkey,ObjectdefaultObject)63. 64. SharedPreferencessp=context.getSharedPreferences(FILE_NAME,65. Context.MODE_PRIVATE);66. 67. if(defaultObjectinstanceofString)68. 69. returnsp.getString(key,(String)default

16、Object);70. elseif(defaultObjectinstanceofInteger)71. 72. returnsp.getInt(key,(Integer)defaultObject);73. elseif(defaultObjectinstanceofBoolean)74. 75. returnsp.getBoolean(key,(Boolean)defaultObject);76. elseif(defaultObjectinstanceofFloat)77. 78. returnsp.getFloat(key,(Float)defaultObject);79. else

17、if(defaultObjectinstanceofLong)80. 81. returnsp.getLong(key,(Long)defaultObject);82. 83. 84. returnnull;85. 86. 87. /*88. *移除某个key值已经对应的值89. *paramcontext90. *paramkey91. */92. publicstaticvoidremove(Contextcontext,Stringkey)93. 94. SharedPreferencessp=context.getSharedPreferences(FILE_NAME,95. Cont

18、ext.MODE_PRIVATE);96. SharedPreferences.Editoreditor=sp.edit();97. editor.remove(key);98. SharedPreferencesCompat.apply(editor);99. 100. 101. /*102. *清除所有数据103. *paramcontext104. */105. publicstaticvoidclear(Contextcontext)106. 107. SharedPreferencessp=context.getSharedPreferences(FILE_NAME,108. Con

19、text.MODE_PRIVATE);109. SharedPreferences.Editoreditor=sp.edit();110. editor.clear();111. SharedPreferencesCompat.apply(editor);112. 113. 114. /*115. *查询某个key是否已经存在116. *paramcontext117. *paramkey118. *return119. */120. publicstaticbooleancontains(Contextcontext,Stringkey)121. 122. SharedPreferences

20、sp=context.getSharedPreferences(FILE_NAME,123. Context.MODE_PRIVATE);124. returnsp.contains(key);125. 126. 127. /*128. *返回所有的键值对129. *130. *paramcontext131. *return132. */133. publicstaticMapgetAll(Contextcontext)134. 135. SharedPreferencessp=context.getSharedPreferences(FILE_NAME,136. Context.MODE_

21、PRIVATE);137. returnsp.getAll();138. 139. 140. /*141. *创建一个解决SharedPreferencesCompat.apply方法的一个兼容类142. *143. *authorzhy144. *145. */146. privatestaticclassSharedPreferencesCompat147. 148. privatestaticfinalMethodsApplyMethod=findApplyMethod();149. 150. /*151. *反射查找apply的方法152. *153. *return154. */155. SuppressWarnings(unchecked,rawtypes)156. privatestaticMethodfindApplyMethod()157. 158. try159. 160. Classclz=SharedPreferences.Editor.class;161.