查看程序的调度状态为"bg"的进程信息
PC终端执行如下命令
$adb shell ps|grep bg
程序中如何执行adb命令?
Runtime.getRuntime().exec("ps")
读取命令执行后返回的数据
BufferedReader reader = null;
String content = "";
try {
//("ps -P|grep bg")执行失败,PC端adb shell ps -P|grep bg执行成功
//Process process = Runtime.getRuntime().exec("ps -P|grep tv");
//-P 显示程序调度状态,通常是bg或fg,获取失败返回un和er
// Process process = Runtime.getRuntime().exec("ps -P");
//打印进程信息,不过滤任何条件
Process process = Runtime.getRuntime().exec("ps");
reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
StringBuffer output = new StringBuffer();
int read;
char[] buffer = new char[4096];
while ((read = reader.read(buffer)) > 0) {
output.append(buffer, 0, read);
}
reader.close();
content = output.toString();
} catch (IOException e) {
e.printStackTrace();
}
Android进程的五个级别,对应五个调度状态
1.foreground process
2.visible process
3.Service process
4.background process
5.empty process
打印的结果:读取到部分进程信息,包含系统应用及用户安装的应用,不能读取全部的进程信息
ps命令读取到的进程信息
各字段的含义:
进程信息各字段含义
android adb 查看进程信息
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