Calling JavaScript Methods from Crosswalk with Java
xwalkView.load("javascript:" + jsCode, null)
References
http://stackoverflow.com/questions/24601087/crosswalk-call-js-function-from-java-on-android
Tag: android
Remote debugging in Embedded Crosswalk
XWalkPreferences.setValue(XWalkPreferences.REMOTE_DEBUGGING, true);
References
https://crosswalk-project.org/documentation/android/android_remote_debugging.html
Requesting Permissions at Run Time in Android
Request the permissions you need
// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(thisActivity,
Manifest.permission.READ_CONTACTS)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
Manifest.permission.READ_CONTACTS)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(thisActivity,
new String[]{Manifest.permission.READ_CONTACTS},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
Handle the permissions request response
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// contacts-related task you need to do.
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
References
https://developer.android.com/training/permissions/requesting.html
Reduce APK Size in Android
android {
// Other settings
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
References
https://github.com/mhdr/AndroidSamples/tree/master/078
https://developer.android.com/topic/performance/reduce-apk-size.html
https://developer.android.com/studio/build/shrink-code.html
Calling Java Methods with JavaScript from Crosswalk
mXWalkView = (XWalkView) findViewById(R.id.activity_main); XWalkSettings webSettings = mXWalkView.getSettings(); webSettings.setJavaScriptEnabled(true);
public class JsInterface {
public JsInterface() {
}
@JavascriptInterface
public String sayHello() {
return "Hello World!";
}
}
mXWalkView.addJavascriptInterface(new JsInterface(), "NativeInterface");
<a href="#" onclick="clicked()">Say Hello</a>
function clicked() {
alert(NativeInterface.sayHello());
}
References
http://zhangwenli.com/blog/2014/08/25/crosswalk-calling-java-methods-with-javascript/
https://developer.android.com/guide/webapps/webview.html#BindingJavaScript
http://stackoverflow.com/questions/25478434/crosswalk-call-java-method-from-javascript
Embedding Crosswalk on Android
download Crosswalk .aar file
https://download.01.org/crosswalk/releases/crosswalk/android/maven2/
Then copy to libs folder
allprojects {
repositories {
jcenter()
flatDir {
dirs 'libs'
}
}
}
compile(name:'xwalk_core_library', ext:'aar')
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="iterator.ir.bmi.MainActivity"
tools:ignore="MergeRootFrame">
<org.xwalk.core.XWalkView
android:id="@+id/xwalkview"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
public class MainActivity extends XWalkActivity {
XWalkView mXWalkView;
@Override
protected void onXWalkReady() {
// Do anyting with the embedding API
mXWalkView.load("file:///android_asset/www/index.html", null);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mXWalkView = (XWalkView) findViewById(R.id.xwalkview);
}
}
References
https://developer.chrome.com/multidevice/webview/gettingstarted
https://crosswalk-project.org/documentation/android/embedding_crosswalk_rvw.html
http://stackoverflow.com/questions/40256449/intellij-idea-how-to-import-aar
https://download.01.org/crosswalk/releases/crosswalk/android/maven2/
How to flash an Android Device manually
fastboot erase boot fastboot erase cache fastboot erase recovery fastboot erase system
fastboot flash bootloader "name of bootloader" fastboot reboot-bootloader
fastboot flash radio "name of radio" fastboot reboot-bootloader
fastboot -w update "name of zip file" or fastboot flash system system.img fastboot flash boot boot.img fastboot flash recovery recovery.img fastboot flash cache cache.img
fastboot erase userdata fastboot flash userdata userdata.img
fastboot reboot
References
http://androidforums.com/threads/guide-how-to-flash-a-nexus-factory-image-manually.706533/
List of fastboot commands
fastboot
usage: fastboot [ <option> ] <command>
commands:
update <filename> reflash device from update.zip
flashall flash boot + recovery + system
flash <partition> [ <filename> ] write a file to a flash partition
erase <partition> erase a flash partition
format <partition> format a flash partition
getvar <variable> display a bootloader variable
boot <kernel> [ <ramdisk> ] download and boot kernel
flash:raw boot <kernel> [ <ramdisk> ] create bootimage and flash it
devices list all connected devices
continue continue with autoboot
reboot reboot device normally
reboot-bootloader reboot device into bootloader
help show this help message
options:
-w erase userdata and cache (and format
if supported by partition type)
-u do not first erase partition before
formatting
-s <specific device> specify device serial number
or path to device port
-l with "devices", lists device paths
-p <product> specify product name
-c <cmdline> override kernel commandline
-i <vendor id> specify a custom USB vendor id
-b <base_addr> specify a custom kernel base address
-n <page size> specify the nand page size. default:
2048
-S <size>[K|M|G] automatically sparse files greater th
an
size. 0 to disable
References
http://androidforums.com/threads/list-of-fastboot-command.714676/
How to use Huawei Update Extractor
fastboot flash cust cust.img fastboot flash boot boot.img fastboot flash recovery RECOVERY.IMG fastboot flash system system.img fastboot flash cache cache.img fastboot flash userdata userdata.img
References
http://forum.xda-developers.com/showthread.php?t=2433454
http://www.needrom.com/download/huawei-ascend-mate-7-mt7-l09/
http://www.daviddosa.nhely.hu/en/2016/04/05/using-huawei-update-extractor/
https://boycracked.com/2016/02/12/easy-guide-to-unbrick-update-firmware-any-android-devices-via-fastboot-mode/
Usefull ADB Commands
adb devices adb reboot recovery adb reboot-bootloader adb push [source] [destination] adb pull adb install [source.apk] adb install -r [source.apk] // installing while keeping the app's data, as you would on the market or with an APK (It means update ) fastboot oem unlock fastboot devices fastboot reboot fastboot flash recovery adb sideload update.zip
References
http://lifehacker.com/the-most-useful-things-you-can-do-with-adb-and-fastboot-1590337225
https://tektab.com/2015/10/31/android-bootloaderfastboot-mode-and-recovery-mode-explained/
https://stackoverflow.com/questions/8962226/testing-an-adb-update-versus-install