急求！！搞笑呢么~这个循环怎么会退出呢~关于读取logcat日志的问题！困扰很久！
RT，怎么run里面的while函数会退出呢？str_all数组里只有200多个，然后str就成null了，然后就退出了~
public class holdon_listener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber){ super.onCallStateChanged(state, incomingNumber); if((state == TelephonyManager.CALL_STATE_OFFHOOK)&(firstcall)){ mhandler.postDelayed(mrun, 1000); firstcall = false; } else if((state == TelephonyManager.CALL_STATE_IDLE)&(!(firstcall))) { firstcall = true; } }}private Handler mhandler = new Handler();private Runnable mrun = new Runnable(){ @SuppressWarnings("null") @Override public void run() { // TODO Auto-generated method stub System.out.println("--------func start--------"); // 方法启动 try { ArrayList<String> cmdLine=new ArrayList<String>(); //设置命令 logcat -d 读取日志 cmdLine.add("logcat"); cmdLine.add("-d"); ArrayList<String> clearLog=new ArrayList<String>(); //设置命令 logcat -c 清除日志 clearLog.add("logcat"); clearLog.add("-c"); Process process=Runtime.getRuntime().exec(cmdLine.toArray(new String[cmdLine.size()])); //捕获日志 BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(process.getInputStream())); //将捕 String str = ""; String str_all[] = new String [1000]; int ii = 0; while((str = bufferedReader.readLine())!=null) { Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()])); str_all[ii] = str; if(str==null) { System.out.println("-- is null --"); } ii++; } ii = ii +1; } catch (IOException e) { e.printStackTrace(); System.out.println("--------str wrong--------"); } System.out.println("--------func end--------"); }