显示logcat日志

我们在Eclipse中经常使用Logcat窗口查看日志信息，不过其实也可以在手机上显示日志。下面的例子就是在textview中显示logcat日志。
java代码如下：?1?
?2?package?LogcatTextView.com;
?3?
?4?import?java.io.BufferedReader;
?5?import?java.io.IOException;
?6?import?java.io.InputStreamReader;
?7?
?8?import?android.app.Activity;
?9?import?android.os.Bundle;
10?import?android.widget.ScrollView;
11?import?android.widget.TextView;
12?
13?public?class?LogcatTextView?extends?Activity?{
14?????/**?Called?when?the?activity?is?first?created.?*/
15?????@Override
16?????public?void?onCreate(Bundle?savedInstanceState)?{
17?????????super.onCreate(savedInstanceState);
18?????????setContentView(R.layout.main);
19?
20?????????try?{
21?
22?????????????Process?process?=?Runtime.getRuntime().exec("logcat?-d");
23?
24?????????????BufferedReader?bufferedReader?=?new?BufferedReader(
25?
26?????????????new?InputStreamReader(process.getInputStream()));
27?
28?????????????StringBuilder?log?=?new?StringBuilder();
29?
30?????????????String?line;
31?
32?????????????while?((line?=?bufferedReader.readLine())?!=?null)?{
33?
34?????????????????log.append(line);
35?
36?????????????}
37?
38?????????????TextView?tv?=?(TextView)?findViewById(R.id.tvLogcat);
39?
40?????????????tv.setText(log.toString());
41?
42?????????????final?ScrollView?scrollView?=?(ScrollView)?findViewById(R.id.scrlLogcat);
43?
44?????????????scrollView.post(new?Runnable()?{
45?????????????????@Override
46?????????????????public?void?run()?{
47?????????????????????scrollView.fullScroll(ScrollView.FOCUS_DOWN);
48?????????????????}
49?????????????});
50?
51?????????}?catch?(IOException?e)?{
52?
53?????????}
54?????}
55?}不要忘记加上权限/>