Develop Reference

crashlyticsDidDetectCrashDuringPreviousExecution for crashlytics NDK

We are using crashlyticsDidDetectCrashDuringPreviousExecution to detect java crashes and report them to our BI systems, but our app is mostly C++ and we are using crashlytics NDK, we can't find anything similar to crashlyticsDidDetectCrashDuringPreviousExecution.
Is there any way that we can actually detect an NDK crash when the app starts?
thanks
Oded

Mike from Fabric here.
Currently, there isn't a way to do this within Fabric or the SDK for an NDK crash.

NOTE: This works on older version only (Crashlytics 2.6.7 and CrashlyticsNDK 1.1.6)
I'm also looking for a solution for this.
We currently found a partial solution. I'm not sure how good it is, it's definitely not official, plus it's asynchronic (which we're trying to overcome by looping), but it's the best solution I found and it seems like it's working
Fabric.with(this, new Crashlytics.Builder().core(core.build()).build(), new CrashlyticsNdk(), new Crashlytics());
if (!userLeft) { // our handling to fix bug, see explanation below
new Thread(new Runnable() {
#Override
public void run() {
SessionEventData crashEventData = null;
for (int i = 0; i < 10; i++) {
try {
Thread.sleep(1000); // in ms
} catch (InterruptedException e) { }
crashEventData = CrashlyticsNdk.getInstance().getCrashEventData();
if (crashEventData != null)
{
// there was a crash!
// crash timestamp can be found at crashEventData.timestamp
break;
}
}
}
}).start();
}
Explaination for userLeft:
We had some bug with reporting crash for users that exited app, and this is the solution for that. We set this flag to true, and save it on the device (SharedPreferences). We do it on our main activity (which extends NativeActivity), on finish() func.
Code:
#Override
public void finish() {
// set some key such as USER_LEFT to TRUE
super.finish();
}
After that, just get that USER_LEFT value, assign it into userLeft param, and set it back to false on SharedPerferences.
Any insights about this solution?

Fails to map api response to pojo when enabling multidex

I'm writing an Android application with lots of dependencies and I needed to enable multidex because it exceeds the limit (65536k methods). I followed this guide and able to compile and run the application on my test device. The problem is I'm getting a nullpointerexception in Robospice RequestListener
for every api call that I make. I'm sure that the api is responding. It seems that the app fails to map the response to my pojo class.
Note: It's running fine before I enabled the multidex.
here is the request listener
private class MyRequestListener implements RequestListener<PojoClass> {
#Override
public void onRequestFailure(SpiceException e) {
}
#Override
public void onRequestSuccess(PojoClass pojoClass) {
// pojoClass <---- this is null
}
}
here are my dependencies for rest and mapping
'org.springframework.android:spring-android-rest-template:2.0.0.M1'
'com.octo.android.robospice:robospice-spring-android:1.4.14'
'org.codehaus.jackson:jackson-core-asl:1.9.13'
'org.codehaus.jackson:jackson-mapper-asl:1.9.13'
Any suggestions

Ui Automator 2.0 project in Android Studio

I want to set up a project in Android Studio. However, I don't want an Android App, just the test project.
Following the lastest release of UiAutomator, I was trying to set a class extending ActivityInstrumentationTestCase2 and start my tests from there.
However, I've stumbled in one thing: I can't figure out how to create the project without making it an app.
The options for creating a new project are:
Start a new Android Studio Project
Open existing projects
Import projects
I did:
Start a new project, give it a name, set minSDK and choose "No activity"
Open build.gradle (under app) and add the dependencies and instrumentation information mentioned in the end of Testing Support Library
Opened androidTest under src and changed the main file: changed to ActivityInstrumentationTestCase2, added setUp and tearDown; defined RunWith Junit4 (as indicated in Testing Support Library)
I build the project (build successful) - Press the green arrow next to build in the "action bar"
My problems are:
How do I install this in the device?
How do I run it in the device?
Do I need to do anything in the AndroidManifest?
Am I editing in the right place? Should I do anything under src/main?
I'd appreciate that the install and run instructions would be both for how to do it through Android Studio and using the command line (if you only know one of them post it anyway please).
Note: this is the first time I'm using Android Studio
Thanks in advance.
EDIT:
Right now I can build and run but it tells me I have no tests to run (empty test suite). Here are my graddle and my code.
My build.graddle is as follows:
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "androidexp.com.ceninhas"
minSdkVersion 21
targetSdkVersion 22
versionCode 1
versionName "1.0"
testInstrumentationRunner="android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'LICENSE.txt'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile 'com.android.support.test:testing-support-lib:0.1'
androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.0.0'
}
My source code (under src/androidTest/java/package) is:
#RunWith(AndroidJUnit4.class)
public class ApplicationTest extends ActivityInstrumentationTestCase2<Activity> {
public final static String ACTIVITY_NAME = "com.calculator.Main";
public final static Class<?> autActivityClass;
static {
try {
autActivityClass = Class.forName(ACTIVITY_NAME);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
public ApplicationTest(){
super((Class<Activity>)autActivityClass);
}
#Before
public void setUp() throws Exception{
super.setUp();
injectInstrumentation(InstrumentationRegistry.getInstrumentation());
}
#After
public void tearDown() throws Exception{
super.tearDown();
}
#Test
public void cenas(){
assertTrue(true);
}
}
The run log on the console was:
Testing started at 18:06 ...
Waiting for device.
Target device: lge-nexus_5-08e506c10ddef123
Uploading file
local path: C:\Users\Ines\workspace\Ceninhas\app\build\outputs\apk\app-debug.apk
remote path: /data/local/tmp/androidexp.com.ceninhas
No apk changes detected. Skipping file upload, force stopping package instead.
DEVICE SHELL COMMAND: am force-stop androidexp.com.ceninhas
Uploading file
local path: C:\Users\Ines\workspace\Ceninhas\app\build\outputs\apk\app-debug-androidTest-unaligned.apk
remote path: /data/local/tmp/androidexp.com.ceninhas.test
No apk changes detected. Skipping file upload, force stopping package instead.
DEVICE SHELL COMMAND: am force-stop androidexp.com.ceninhas.test
Running tests
Test running startedFinish
Empty test suite.
What am I doing wrong?

I am also using uiautomator 2.0 from AndroidStudio. Here are some answers to your questions.
How do I install this in the device?
How do I run it in the device?
Make sure your device is connected using
adb devices
if not, you must connect it using
adb kill-server
adb connect xxx.xxx.xxx.xxx
Then from AndroidStudio, right click on your test class and click on "Run YourTestCase".
Do I need to do anything in the AndroidManifest?
I have nothing special in my manifest, but be sure you add
android {
defaultConfig {
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
}
in your build.gradle
Am I editing in the right place? Should I do anything under src/main?
Yes, you are editing at the right place. But you can move your code to src/main. To do so, you will need to change androidTestCompile to compile in your build.gradle file.
I did not try to run test from command line yet, but you can see AndroidStudio commands, maybe it can help.
I hope it helped you.
EDIT 1
I use this code
build.gradle (projectRoot)
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.0"
lintOptions {
abortOnError false
}
packagingOptions {
exclude 'NOTICE'
exclude 'LICENSE.txt'
}
defaultConfig {
minSdkVersion 19
targetSdkVersion 22
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.0.0'
compile 'com.android.support.test:testing-support-lib:0.1'
compile 'com.android.support.test.uiautomator:uiautomator-v18:2.0.0'
compile project(':aiccore')
}
LoginTestCase (projectRoot/src/main/LoginTestCase.java)
public class LoginTestCase extends InstrumentationTestCase {
protected UiDevice device = null;
protected String appName;
public LoginTestCase() {
this("YourAppName")
}
public LoginTestCase(String appName) {
this.appName = appName;
}
public void runApp(String appName) throws UiObjectNotFoundException, RemoteException {
device = UiDevice.getInstance(getInstrumentation());
device.pressHome();
device.waitForWindowUpdate("", 2000);
UiObject2 allAppsButton = device.findObject(By.desc("Apps"));
allAppsButton.click();
device.waitForWindowUpdate("", 2000);
UiScrollable appViews = new UiScrollable(new UiSelector().scrollable(true));
appViews.setAsHorizontalList();
UiObject settingsApp = appViews.getChildByText(new UiSelector().className(TextView.class.getName()), appName);
settingsApp.clickAndWaitForNewWindow();
assertTrue("Unable to detect app", settingsApp != null);
}
#Override
public void setUp() throws RemoteException, UiObjectNotFoundException {
this.runApp(appName);
}
#Override
public void tearDown() throws RemoteException, UiObjectNotFoundException {
//Empty for the moment
}
public void testUS1() {
UiObject2 usernameLabel = device.findObject(By.clazz(TextView.class.getName()).text("Username"));
assertTrue("Username label not found", usernameLabel != null);
}

Well, actually, you should not write test code that way. Just keep your code under the src/androidTest folder, and write test code like this:
#RunWith(AndroidJUnit4.class)
#SdkSuppress(minSdkVersion = 18)
public class ChangeTextBehaviorTest {
private static final String BASIC_SAMPLE_PACKAGE
= "com.example.android.testing.uiautomator.BasicSample";
private static final int LAUNCH_TIMEOUT = 5000;
private static final String STRING_TO_BE_TYPED = "UiAutomator";
private UiDevice mDevice;
#Before
public void startMainActivityFromHomeScreen() {
// Initialize UiDevice instance
mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
// Start from the home screen
mDevice.pressHome();
// Wait for launcher
final String launcherPackage = mDevice.getLauncherPackageName();
assertThat(launcherPackage, notNullValue());
mDevice.wait(Until.hasObject(By.pkg(launcherPackage).depth(0)),
LAUNCH_TIMEOUT);
// Launch the app
Context context = InstrumentationRegistry.getContext();
final Intent intent = context.getPackageManager()
.getLaunchIntentForPackage(BASIC_SAMPLE_PACKAGE);
// Clear out any previous instances
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
context.startActivity(intent);
// Wait for the app to appear
mDevice.wait(Until.hasObject(By.pkg(BASIC_SAMPLE_PACKAGE).depth(0)),
LAUNCH_TIMEOUT);
}
#Test
public void checkPreconditions() {
assertThat(mDevice, notNullValue());
}
#Test
public void testChangeText_sameActivity() {
// Type text and then press the button.
mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "editTextUserInput"))
.setText(STRING_TO_BE_TYPED);
mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "changeTextBt"))
.click();
// Verify the test is displayed in the Ui
UiObject2 changedText = mDevice
.wait(Until.findObject(By.res(BASIC_SAMPLE_PACKAGE, "textToBeChanged")),
500 /* wait 500ms */);
assertThat(changedText.getText(), is(equalTo(STRING_TO_BE_TYPED)));
}
}
For detail please look out: UIAutomator Test sample

Phonegap plugin for android is not working. Why?

I cannot make an Android phonegap plugin work. Not even a single one of the examples I found nor my pathetic failures trying to create one by myself. I first tried with Tutorials like this one. They don't work for me. I always end up with a Cannot call method of undefined error.
So I tried something ready. Got this project from github. It's just a simple plugin to show a toast. I checked everything that i learned on the tutorials:
//the package name in the java
package com.phonegap.toast;
//my class extends Plugin and has a simple show toast method.
public class Tutorial extends Plugin {
#Override
public PluginResult execute(String cmd, JSONArray args, String callback) {
if(cmd.equals("toast"))
{
return showToast(args);
}
return null;
}
private PluginResult showToast(JSONArray args) {
final String message;
try {
message = args.getString(0);
ctx.runOnUiThread(new Runnable()
{
public void run() {
Toast myToast = Toast.makeText(ctx, message, Toast.LENGTH_SHORT);
myToast.show();
}
});
return new PluginResult(PluginResult.Status.OK);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
}
}
}
the plugin is defined in res/xml/plugins.xml
plugin name="Tutorial" value="com.phonegap.toast.Tutorial"
and no, if i put it on rex/xml/config.xml it also doesn't work
Last, the method that calls the plugin:
function createToast() {
// i also tried window.Tutorial.showToast('Hello AndroidOpen'); with no success
window.plugins.Tutorial.showToast('Hello AndroidOpen');
}
And here I get the same error again.
10-22 15:39:07.770: E/Web Console(2885): Uncaught TypeError: Cannot call method 'showToast' of undefined at file:///android_asset/www/main.js:123
Any enlightened soul can explain to me what I'm doing wrong? I've been trying this for days, with many different plugins, both my own and even this ones and I can't find out what is it.

Okay, here are a few things that are probably tripping you up. First if the config.xml file exists in res/xml then it will take precedence over plugins.xml. So you will need to add your plugin line to config.xml instead.
Make sure you are including the .js file for your Toast plugin.
Third, window.plugins has been deprecated away so you may need to modify the .js if you are using PhoneGap 2.0.0 or better. Check out my blog post on the topic. The root change is that you now need to new PluginName in your JS as it is no longer put in window.plugins by default.

Is there a function call to enter the debugger?

For example, the flash platform provides the flash.debugger.enterDebugger() API call that does the job:
if (some_cond())
{
...
}
else
{
enterDebugger();
}
In that case, if some_cond() evaluates to false and we're in a debug session (it does nothing if we're in a normal session), then the execution will be halted at the line where enterDebugger is invoked and control given to the debugger, as if a breakpoint was set at that line.
I've looked at the android.os package but found nothing like it. Throwing an exception does the job of giving the control to the debugger, but then the code execution cannot be resumed at the spot where the exception was thrown.

Java debugging supports suspending on exceptions. You could write:
void enterDebugger() {
try {
throw new DebugException();
}
catch (DebugException e) { //no-op
}
}
And setup your IDE to suspend on caught exceptions of type DebugException.

if (someCond()) { .... }
else {
android.os.Debug.waitForDebugger();
}
See android.os.Debug.