Write android logcat data to a file
Here is an example of reading the logs.
You could change this to write to a file instead of to a TextView
.
Need permission in AndroidManifest
:
<uses-permission android:name="android.permission.READ_LOGS" />
Code:
public class LogTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
Process process = Runtime.getRuntime().exec("logcat -d");
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
StringBuilder log = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
log.append(line);
}
TextView tv = (TextView) findViewById(R.id.textView1);
tv.setText(log.toString());
} catch (IOException e) {
}
}
}
Or you can try this variant
try {
final File path = new File(
Environment.getExternalStorageDirectory(), "DBO_logs5");
if (!path.exists()) {
path.mkdir();
}
Runtime.getRuntime().exec(
"logcat -d -f " + path + File.separator
+ "dbo_logcat"
+ ".txt");
} catch (IOException e) {
e.printStackTrace();
}
Logcat can write directly to a file:
public static void saveLogcatToFile(Context context) {
String fileName = "logcat_"+System.currentTimeMillis()+".txt";
File outputFile = new File(context.getExternalCacheDir(),fileName);
@SuppressWarnings("unused")
Process process = Runtime.getRuntime().exec("logcat -f "+outputFile.getAbsolutePath());
}
more info on logcat: see http://developer.android.com/tools/debugging/debugging-log.html