在textview中展示logcat日志

在textview中显示logcat日志

看到一篇好文章故转载分享下

转载自：http://www.blogjava.net/andteamroid/archive/2011/03/09/346020.html

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

< uses- permission android: name= "android.permission.READ_LOGS" />

在textview中展示logcat日志

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