Exemple Try Catch
static void TestTry() {
List list = new ArrayList();
list.add(3);
list.add(5);
list.add(0);
try{
Log.d("TestListe", "A list element is: "+list.get(7));
}catch(IndexOutOfBoundsException e){
e.printStackTrace();
}finally {
Log.d("TestListe", "Traitement final...");
}
}
Dans le cas d’une exception inconnue : UncaughtExceptionHandler : Store Log to SD-Card or to Email with some debug information to the developer. For E-mail you need to uncomment code inside « showAlertToReport »
package com.andrologiciels.androtransms;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Environment;
import android.os.Looper;
import android.os.StatFs;
import android.util.Log;
import android.widget.Toast;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.Date;
import java.util.Locale;
import static android.os.Environment.getExternalStorageDirectory;
/**
* {@link UncaughtExceptionHandler} Store Log to SD-Card or to Email with some debug information to the developer. For E-mail you need to uncomment
* code inside "showAlertToReport"
*
* @author Azharahmed
*/
@SuppressWarnings("deprecation")
public class CustomExceptionHandler implements UncaughtExceptionHandler {
// Uncomment to send mail
private static Context context1;
// private Thread.UncaughtExceptionHandler previousHandler;
private Context context;
private File logFile;
private FileOutputStream stream;
private FileWriter crashReport = null;
// private static final String RECIPIENT = "psdindia1@gmail.com";
public CustomExceptionHandler(Context ctx, String mDirectoryName, String mFileName) {
context = ctx;
context1 = ctx;
}
private StatFs getStatFs() {
File path = Environment.getDataDirectory();
return new StatFs(path.getPath());
}
private long getAvailableInternalMemorySize(StatFs stat) {
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
return availableBlocks * blockSize;
}
private long getTotalInternalMemorySize(StatFs stat) {
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize;
}
private void addInformation(StringBuilder message) {
message.append("Locale: ").append(Locale.getDefault()).append('\n');
try {
PackageManager pm = context.getPackageManager();
PackageInfo pi;
pi = pm.getPackageInfo(context.getPackageName(), 0);
message.append("Version: ").append(pi.versionName).append('\n');
message.append("Package: ").append(pi.packageName).append('\n');
} catch (Exception e) {
Log.e("ServiceSMS", "Error", e);
message.append("Could not get Version information for ").append(context.getPackageName());
}
message.append("Phone Model: ").append(android.os.Build.MODEL).append('\n');
message.append("Android Version: ").append(android.os.Build.VERSION.RELEASE).append('\n');
message.append("Board: ").append(android.os.Build.BOARD).append('\n');
message.append("Brand: ").append(android.os.Build.BRAND).append('\n');
message.append("Device: ").append(android.os.Build.DEVICE).append('\n');
message.append("Host: ").append(android.os.Build.HOST).append('\n');
message.append("ID: ").append(android.os.Build.ID).append('\n');
message.append("Model: ").append(android.os.Build.MODEL).append('\n');
message.append("Product: ").append(android.os.Build.PRODUCT).append('\n');
message.append("Type: ").append(android.os.Build.TYPE).append('\n');
StatFs stat = getStatFs();
message.append("Total Internal memory: ").append(getTotalInternalMemorySize(stat)).append('\n');
message.append("Available Internal memory: ").append(getAvailableInternalMemorySize(stat)).append('\n');
}
public void uncaughtException(Thread t, Throwable mThrowableException) {
try {
StringBuilder report = new StringBuilder();
Date curDate = new Date();
report.append("Error Report collected on : ").append(curDate.toString()).append('\n').append('\n');
report.append("Informations :").append('\n');
addInformation(report);
report.append('\n').append('\n');
report.append("Stack:\n");
final Writer result = new StringWriter();
final PrintWriter printWriter = new PrintWriter(result);
// Exception will write all stack trace to string builder
mThrowableException.printStackTrace(printWriter);
report.append(result.toString());
printWriter.close();
report.append('\n');
report.append("**** End of current Report ***");
//Log.e("ServiceSMS", "Error while sendErrorMail" + report);
//showAlertToReport(report);
// ------- Write Crash Report to External Storage
writeFile(report.toString());
Log.e("ServiceSMS", "ERROR : " + report);
// Pass Activity to open
/*
Intent mIntent = new Intent(context1, MainActivity.class);
context1.startActivity(mIntent);
*/
System.exit(0);
} catch (Throwable ignore) {
// Log.e(UnCaughtException.class.getName(), "Error while sending error e-mail", ignore);
}
// previousHandler.uncaughtException(t, e);
}
/**
* This method for call alert dialog when application crashed!
*/
public void showAlertToReport(final StringBuilder errorContent) {
final AlertDialog.Builder builder = new AlertDialog.Builder(context);
new Thread() {
@Override
public void run() {
Looper.prepare();
builder.setTitle(context.getApplicationInfo().getClass().getName());
builder.setMessage("Application crash report is saved");
builder.create();
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
System.exit(0);
}
});
builder.setPositiveButton("Report", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// ------- Write Crash Report to External Storage
try {
System.out.println(errorContent.toString());
BufferedWriter buf = new BufferedWriter(crashReport);
try {
buf.write(errorContent.toString());
} catch (Exception e) {
e.printStackTrace();
} finally {
buf.flush();
buf.close();
}
} catch (Exception ex) {
Log.e("ServiceSMS", "IO ERROR", ex);
}
// ------- Uncomment to send mail of Error Log
// Intent sendIntent = new Intent(Intent.ACTION_SEND);
// String subject = "Your App is crassing, Please fix it!";
// StringBuilder body = new StringBuilder("Error Log : ");
// body.append('\n').append('\n');
// body.append(errorContent).append('\n').append('\n');
// // sendIntent.setType("text/plain");
// sendIntent.setType("message/rfc822");
// sendIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { RECIPIENT });
// sendIntent.putExtra(Intent.EXTRA_TEXT, body.toString());
// sendIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
// sendIntent.setType("message/rfc822");
// // context.startActivity(Intent.createChooser(sendIntent, "Error Report"));
// context1.startActivity(sendIntent);
System.exit(0);
}
});
builder.setMessage("Unfortunately,This application has stopped");
builder.show();
Looper.loop();
}
}.start();
}
///////////////////////////
private void writeFile(String data) {
String fileName = "AAA_logfic.txt";
File extStore = Environment.getExternalStorageDirectory();
// ==> /storage/emulated/0/note.txt
String path = extStore.getAbsolutePath() + "/memtmp/" + fileName;
Log.i("ExternalStorageDemo", "Save to: " + path);
try {
File myFile = new File(path);
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(data);
myOutWriter.close();
fOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/////////////////
}
http://www.siteduzero.com/informatique/tutoriels/apprenez-a-programmer-en-java/le-bloc-try-catch
AndroLogiciels 
Votre commentaire