我有这个shell脚本:
#!system/bin/sh
while :
do
sync
echo 3> /proc/sys/vm/drop_caches
echo "Script is been launched"
sleep 30m
done
exit 0;
我希望能在Android应用程序中运行此脚本。目前,我已经创建了一个仅包含Toast的按钮。我该如何使用应用程序上的按钮来获取脚本(free.sh)并启动它?或者是否有将代码重写为Java的解决方案?谢谢
OnClick
回调函数中尝试此代码:Button b = findViewById(R.id.buttonPower);
b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Process p=null;
try {
p = new ProcessBuilder()
.command("PathToYourScript")
.start();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(p!=null) p.destroy();
}
}
});
以下是如何在您的Android应用程序中运行shell脚本的方法:
try {
Process process = Runtime.getRuntime().exec("sh /sdcard/test.sh");
BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
String listOfFiles = "";
String line;
while ((line = in.readLine()) != null) {
listOfFiles += line;
}
}
catch (IOException e) {
e.printStackTrace();
}
我的代码出现了错误:
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import com.example.toast.R;
public class MainActivity extends Activity {
private Button button;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab1);
button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Process process = new ProcessBuilder()
.command("PATH")
.redirectErrorStream(true)
.start();
try {
InputStream in = process.getInputStream();
OutputStream out = process.getOutputStream();
readStream(in);// Here: Syntax error, insert "}" to complete `Block`
finally {
process.destroy();
}
}
}
}); //Here: Syntax error on token "}", delete this token
}
protected void readStream(InputStream in) {
// TODO Auto-generated method stub
}
}
好的,现在没有错误(谢谢!),但是什么也没发生...为了尝试,我编写了一个简单的脚本来写入一个file.txt文件。请看代码:
public class MainActivity extends Activity {
private Button button;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab1);
button = findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@SuppressLint("SdCardPath")
@Override
public void onClick(View arg0) {
Process p=null;
try {
p = new ProcessBuilder()
.command("/sdcard/Script/scritturafile.sh")
.start();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(p!=null) p.destroy();
}
}
});
}
}
没有错误,但是当我按下按钮时,我认为shell没有运行,因此没有创建file.txt文件。