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Created by freyo on September 07, 2011 16:46:14
Last update: September 07, 2011 19:23:00
The Android unit test framework is based on JUnit 3 , not JUnit 4. Test cases have to extend junit.framework.TestCase or a subclass (such as android.test.InstrumentationTestCase ). Tests are identified by public methods whose name starts with test , not methods annotated with @Test (as in JUnit 4). An Android test suite is packaged as an APK, just like the application being tested. To create a test package, first you need to identify the application package it is testing. Google suggests to put the test package source in a directory named tests/ alongside the src/ directory of the main application. At runtime, Android instrumentation loads both the test package and the application under test into the same process. Therefore, the tests can invoke methods on...
Created by freyo on August 31, 2011 15:49:54
Last update: August 31, 2011 15:49:54
Got this error while trying to build Android app:
[apkbuilder] Creating AppInfo-debug-unaligned.ap...
Solution:
Delete the Android debug keystore:
$ rm ~/.android/debug.keystore
Build again:
$ ant debug
The new key is valid for 30 years (keystore password is 'android'):
$ keytool -list -v -keystore ~/.android/debug.keys...
Created by freyo on August 04, 2011 12:27:27
Last update: August 04, 2011 12:30:42
I got this error while building an APK:
[apply]
[apply] UNEXPECTED TOP-LEVEL ERROR...
Apparently the dx tool was running out of memory. The dx script (shell or bat) provides options to pass in Java options, but it's a lot easier just to bump up the default in dx :
# By default, give dx a max heap size of 1 gig. Th...
Here, I changed the default 1024M to 1624M and resolved the problem.
Created by freyo on June 30, 2011 11:15:48
Last update: June 30, 2011 11:15:48
Install APK with adb :
$ platform-tools/adb install out/target/product/ge...
Error message in logcat:
D/PackageParser( 60): Scanning package: /data/ap...
The error was created by android.content.pm.PackageParser , which compares the android:minSdkVersion and android:targetSdkVersion attributes of the uses-sdk element of AndroidManifest.xml in the APK file against the SDK version of the device or emulator. The SDK version on the device has to be greater than that required by android:minSdkVersion .
In my case, since I built the package with AOSP, the target emulator has to be AOSP also. This is the relavant section in AndroidManifest.xml :
<uses-sdk android:minSdkVersion="AOSP"
...
And the relevant section in android.content.pm.PackageParser :
if (minCode != null) {
if (!minCode.equals(...
Created by voodoo on June 21, 2011 08:19:33
Last update: June 21, 2011 08:34:28
Got "base64: invalid input" error:
$ base64 -d base64_encoded.txt >original.bin
ba...
which can be easily dismissed as "input is invalid base64 encoded" or "partial input". But I know it's valid base64 encoded input!
The problem was, the input was base64 encoded on Windows! The error goes away after converting to Unix format with dos2unix .
dos2unix < base64_encoded.txt | base64 -d >origina...
Version of base64 used:
$ base64 --version
base64 (GNU coreutils) 8.5
...
Created by jinx on May 03, 2011 09:12:05
Last update: May 03, 2011 09:12:19
Both include and require include and evaluate the file specified as argument. The only difference is, when the included file cannot be found, include emits a warning while require emits a fatal error.
Example:
<?php
include('non-existing-file');
require(...
Outputs:
PHP Warning: include(non-existing-file): failed t...
Suppress error with @ :
<?php
@include('non-existing-file');
echo "A...
Outputs:
After include
Created by jinx on May 02, 2011 20:48:49
Last update: May 02, 2011 20:58:01
A PHP try catch block looks like this:
<?php
try {
throw new MyException('foo!'...
Normally, no exceptions are thrown from internal function errors. For example:
<?php
$a = 1;
$b = 0;
try {
$v = $...
The division by zero error is never caught as an exception.
However , you can translate errors into exceptions with an error handler and ErrorException :
<?php
function exception_error_handler($errno, ...
which prints:
Exception: exception 'ErrorException' with message...
PHP does not support finally clause.
Created by jinx on April 28, 2011 20:52:45
Last update: April 29, 2011 13:27:31
This is normally a syntax error just before some variable. Try some of these:
Missing operator before a variable:
<?php
$a = 'ab';
echo('Missing conca...
Missing semicolon at end of line:
<?php
echo('Missing semicolon at end of lin...
Missing ( and ) in for loop:
<?php
foreach $a as $i {
echo "$i\n";
...
Missing keyword before class variable:
<?php
class A {
// should be var $a;
...
Created by jinx on April 19, 2011 20:30:20
Last update: April 19, 2011 20:30:20
The PHP constant __FILE__ is the current file name, __LINE__ is the current line number. These can be helpful writing error logs.
<?php
// __LINE__ is the current line numbe...
Outputs:
Current file is C:\scrap\test2.php, current line n...
Created by voodoo on April 13, 2011 13:47:34
Last update: April 13, 2011 13:49:20
You get "permission denied" error from Apache HTTPD for a page. And you checked file/directory permissions (the whole directory path, not just the file) and everything in httpd.conf . If everything seemed right, then SELinux may be blocking the access.
Open /var/log/httpd/error_log , you may see a line like this:
[Wed Apr 13 15:50:35 2011] [notice] SELinux poli...
These are the steps to fix:
If the directory resides in a user home directory:
# setsebool -P httpd_read_user_content 1
Create a policy package from the audit log:
# grep httpd /var/log/audit/audit.log | audit2allo...
Apply the policy package just created
# semodule -i mypol.pp
Restart apache httpd:
# apachectl restart
