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POWhy read logcat in loop read only one time
 

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    <p>I run my service (write logcat to file) on any emulators and real devices from 2.3.3 to 4.1. All OK. On this devices generated right log:</p> <pre><code>--------- beginning of /dev/log/main --------- beginning of /dev/log/system I/ActivityManager( 3386): START {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.android.launcher/com.androWAcivtMaae( 36:IvldakgNme W/ActivityManager( 3386): Duplcaefns eus orcitRod45c6 o.vnotsolet.tiiyilg I/ActivityManager( 3386): Displayed com.android.calculator2/.Calculator: +9s374ms&lt;br&gt; ..... ..... </code></pre> <p>But when I run service on 4.1.2 (samsung (google) Nexus S (soju, crespo), SDK 16, flash 485486, build JZO54K) or 2.3.6, my service stoped after <b>one line</b> in logs.</p> <p>On this devices generated wrong log:</p> <pre><code>--------- beginning of /dev/log/main </code></pre> <p>Only print one line and nothing.... Service stay in memory, but not work right...</p> <p>This is my code</p> <p><b>AndroidManifest</b></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.my.logcatt" android:versionCode="1" android:versionName="0.5"&gt; &lt;uses-sdk android:minSdkVersion="10" /&gt; &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt; &lt;uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /&gt; &lt;uses-permission android:name="android.permission.READ_LOGS" /&gt; &lt;application android:theme="@android:style/Theme.NoTitleBar"&gt; &lt;activity android:name=".ActivityMain" android:label="logcatt"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;receiver android:name=".BroadcastBoot" android:enabled="true" android:exported="false"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.BOOT_COMPLETED" /&gt; &lt;/intent-filter&gt; &lt;/receiver&gt; &lt;service android:name=".ServiceMain" android:enabled="true" /&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p><b>Activity</b></p> <pre><code>package com.my.logcatt; import android.app.Activity; import android.content.Intent; import android.os.Bundle; public class ActivityMain extends Activity { @Override public void onCreate( Bundle savedInstanceState) { super.onCreate( savedInstanceState); setContentView( R.layout.main); try { startService( new Intent( getApplicationContext(), ServiceMain.class)); } catch( Exception e) {} } } </code></pre> <p><b>Service</b></p> <pre><code>package com.my.logcatt; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileWriter; import java.io.InputStreamReader; import android.app.Service; import android.content.Intent; import android.os.Environment; import android.os.IBinder; public class ServiceMain extends Service { public static Process procLogcatClean = null; public static Process procLogcatAM = null; public static BufferedReader readerLogcat = null; public static void fLog( String sLogMessage) { FileWriter fileLog = null; BufferedWriter bufferLog = null; try { fileLog = new FileWriter( Environment.getExternalStorageDirectory().getAbsolutePath() + "/123.log", true); if( fileLog != null) { bufferLog = new BufferedWriter( fileLog); bufferLog.write( sLogMessage + "\r\n"); bufferLog.flush(); } } catch( Exception e) {} finally { if( bufferLog != null) { try { bufferLog.close(); } catch( Exception e) {} } if( fileLog != null) { try { fileLog.close(); } catch( Exception e) {} } } } @Override public void onCreate() { super.onCreate(); startService(); } @Override public IBinder onBind(Intent intent) { return null; } @Override public void onDestroy() { super.onDestroy(); } public void startService() { final Thread thread = new Thread() { public void run() { try { Runtime localRuntimeClear = Runtime.getRuntime(); String[] sLogcatClear = new String[ 2]; sLogcatClear[ 0] = "logcat"; sLogcatClear[ 1] = "-c"; procLogcatClean = localRuntimeClear.exec( sLogcatClear); procLogcatClean.waitFor(); Runtime localRuntimeAM = Runtime.getRuntime(); String[] sLogcatAM = new String[ 2]; sLogcatAM[ 0] = "logcat"; sLogcatAM[ 1] = "ActivityManager:I *:S"; procLogcatAM = localRuntimeAM.exec( sLogcatAM); readerLogcat = new BufferedReader( new InputStreamReader( procLogcatAM.getInputStream()), 1024); String str = ""; while( true) { str = ""; try { if( readerLogcat != null) { str = readerLogcat.readLine(); fLog( str); } } catch( Exception e) {} if( str.compareTo( "") == 0) continue; } } catch( Exception e) {} finally {} } }; thread.setPriority( Thread.MAX_PRIORITY); thread.start(); } } </code></pre> <p>What is wrong?</p>
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