Java开发问题

How I can fix Android license status unknown in flutter?(如何修复颤振中未知的 Android 许可证状态?)
java.lang.NoClassDefFoundError: how do I fix this error?(java.lang.NoClassDefFoundError:我该如何解决这个错误?)
duplicate entry: com/google/android/gms/auth/api/signin/internal/zzf.class(重复条目:com/google/android/gms/auth/api/signin/internal/zzf.class)
Cannot resolve symbol NameValuePair(无法解析符号 NameValuePair)
Can#39;t find AVD or SDK manager in Eclipse(在 Eclipse 中找不到 AVD 或 SDK 管理器)
Differences between JDK and Java SDK(JDK和Java SDK的区别)
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE(Android 模拟器:安装错误:INSTALL_FAILED_VERSION_DOWNGRADE)
Checking for Power Saver Mode programmatically(以编程方式检查省电模式)
Setting JAVA_HOME at Android SDK(在 Android SDK 中设置 JAVA_HOME)
How to install Java SDK on CentOS?(如何在 CentOS 上安装 Java SDK?)
package android.support.v4.app does not exist ; in Android studio 0.8(包 android.support.v4.app 不存在;在安卓工作室 0.8)
Android app crashes after SDK-tools update version (NoClassDefFound, tool version 22)(Android 应用程序在 SDK-tools 更新版本后崩溃(NoClassDefFound,工具版本 22))