提示already connected to 成功连接,,adb shell 却提示设备离线 adb.exe: device offline
时间: 2023-11-23 13:38:46 浏览: 74
这个问题通常是由于以下原因之一导致的:
1. 设备没有启用调试模式。
2. 设备的 USB 调试选项未启用。
3. 设备的 USB 驱动程序未正确安装。
4. 设备与计算机之间的 USB 连接有问题。
您可以尝试以下解决方法:
1. 确保您的设备已启用调试模式。您可以在设备设置中找到此选项。
2. 确保您的设备的 USB 调试选项已启用。同样,您可以在设备设置中找到此选项。
3. 确保您的设备的 USB 驱动程序已正确安装。您可以在设备制造商的网站上下载并安装最新的 USB 驱动程序。
4. 尝试使用不同的 USB 端口或 USB 电缆连接您的设备和计算机。
如果上述方法都无法解决问题,您可以尝试重新启动设备和计算机,或者尝试更新您的 Android SDK 版本。
相关问题
adb.exe: no devices/emulators found
This error message indicates that the ADB (Android Debug Bridge) tool is unable to detect any connected devices or emulators. There are several possible reasons for this issue:
1. USB Connection: Make sure that your Android device is properly connected to your computer via USB cable. Check that the USB debugging option is enabled in the developer options on your Android device.
2. ADB Drivers: Ensure that the correct ADB drivers are installed on your computer for your Android device. You can check this by going to Device Manager on your computer, and then looking for your device under the "Android Device" category.
3. Restart ADB: Try restarting the ADB server by opening a command prompt and typing "adb kill-server" and then "adb start-server".
4. Update ADB: Check if there is any new version of ADB available for download. Install it if there is.
5. Firewall: Check if any firewall is blocking the ADB connection.
If none of these solutions work, try using a different USB cable or port. If the issue persists, there may be a hardware problem with your Android device or computer.
java.lang.IllegalStateException: Already connected
引用\[1\]:在调试程序bug的过程中,出现了java.lang.IllegalStateException: Already connected的异常。这个异常的主要原因有两种。一种是将connection.setInput()放在了connection.connect()的后面,另一种是在get请求中设置了connection.DoOutput()。\[1\]引用\[3\]:在查看了一些RequestProperties相关的方法后,发现在判断connected是否为true的时候,会导致java.lang.IllegalStateException: Already connected异常的出现。\[3\]
这个异常的解决方法有几种。首先,确保在调用connection.connect()之前设置connection.setInput()。其次,如果是在get请求中,不要设置connection.DoOutput()。最后,可以尝试关闭防火墙,因为有时候防火墙的设置可能会导致这个异常的出现。在Linux下关闭防火墙的命令是service iptables stop。\[2\]
#### 引用[.reference_title]
- *1* [java.lang.IllegalStateException: Already connected](https://blog.csdn.net/bell10027/article/details/50417161)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [java.lang.IllegalStateException: Failed to register dubbo://139.224.33.130:20881](https://blog.csdn.net/nxg0916/article/details/123129968)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [【BUG】IllegalStateException:Already connect](https://blog.csdn.net/guafengzhetian_Tu/article/details/119795388)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]