我查的資料以下的代碼可以從程序中讀出logcat 的輸出信息。然而,當我調用這個函數時,並沒起作用,從system.out中除了輸出"logcat called"以外,再沒有輸出別的任何信息。資料中說的這段代碼沒錯,但是現在實現不了。
public void Collector_logcat(){
String stringbuffer="";
String command="logcat -d";
String command_c="logcat -c";
System.out.println("logcat called\n");
try{
m_logcatprocess=Runtime.getRuntime().exec(command);
m_logcat_inputreader=new InputStreamReader(m_logcatprocess.getInputStream());
m_logcat_reader=new BufferedReader(m_logcat_inputreader);
while((stringbuffer=m_logcat_reader.readLine())!=null){
System.out.println(stringbuffer+"\n");
}
Runtime.getRuntime().exec(command_c);
}
catch(Exception ex){
System.out.println(ex.getMessage());
System.out.println("error in Collector_logcat\n");
}
return ;
}
試一下:
AndroidManifest.xml
<uses-permission android:name="android.permission.READ_LOGS" />
Get catlog:
try {
ArrayList<String> commandLine = new ArrayList<String>();
commandLine.add( "logcat");
commandLine.add( "-d");
commandLine.add( "-v");
commandLine.add( "time");
commandLine.add( "-s");
commandLine.add( "tag:W");
Process process = Runtime.getRuntime().exec( commandLine.toArray( new String[commandLine.size()]));
BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(process.getInputStream()), 1024);
String line = bufferedReader.readLine();
while ( line != null) {
log.append(line);
log.append("\n")
}
} catch ( IOException e) {
}
你將會得到以下的輸出:
09-08 09:44:42.267 W/tag ( 754): message1
09-08 09:44:42.709 W/tag ( 754): message2
09-08 09:44:43.187 W/tag ( 754): message3
09-08 09:44:45.295 E/tag ( 754): message8