Json转换利器Gson实例代码，java对象或者list转换为json字符串

-- Merging decision tree log --- manifest ADDED from AndroidManifest.xml:2:1 package ADDED from AndroidManifest.xml:3:5 INJECTED from AndroidManifest.xml:0:0 INJECTED from AndroidManifest.xml:0:0 android:versionName INJECTED from AndroidManifest.xml:0:0 INJECTED from AndroidManifest.xml:0:0 xmlns:android ADDED from AndroidManifest.xml:2:11 android:versionCode INJECTED from AndroidManifest.xml:0:0 INJECTED from AndroidManifest.xml:0:0 application ADDED from AndroidManifest.xml:5:5 android:label ADDED from AndroidManifest.xml:8:9 android:allowBackup ADDED from AndroidManifest.xml:6:9 android:icon ADDED from AndroidManifest.xml:7:9 android:theme ADDED from AndroidManifest.xml:9:9 activity#com.example.com.myapplication.MainActivity ADDED from AndroidManifest.xml:10:9 android:label ADDED from AndroidManifest.xml:12:13 android:name ADDED from AndroidManifest.xml:11:13 intent-filter#android.intent.action.MAIN+android.intent.category.LAUNCHER ADDED from AndroidManifest.xml:13:13 action#android.intent.action.MAIN ADDED from AndroidManifest.xml:14:17 android:name ADDED from AndroidManifest.xml:14:25 category#android.intent.category.LAUNCHER ADDED from AndroidManifest.xml:16:17 android:name ADDED from AndroidManifest.xml:16:27 uses-sdk INJECTED from AndroidManifest.xml:0:0 reason: use-sdk injection requested android:targetSdkVersion INJECTED from AndroidManifest.xml:0:0 INJECTED from AndroidManifest.xml:0:0 android:minSdkVersion INJECTED from AndroidManifest.xml:0:0 INJECTED from AndroidManifest.xml:0:0