getCallingFunctionName() is the important function here.
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
function getCallingFunctionName() { var re = /function (.*?)\(/ var s = getFunctionName.caller.toString(); var m = re.exec( s ) return m[1]; } function myCurrentFunction(){ var func_name = getCallingFunctionName(); alert(func_name); //displays "myCurrentFunction" } myCurrentFunction(); |
Source: Can I get the name of the currently running function in JavaScript?
To switch into another activity, the method we use is startActivity(). This is what starts another Android activity:
|
1 2 |
Intent i = new Intent(this, NameOfActivity.class); startActivity(i); |
Replace NameOfActivity with the name of any activity you’d like to switch into.
A WebView lets you pull a web page and display it in your Android app. It doesn’t take long to implement an Android WebView. Read on. I’ll show you how. AndroidManifest.xml First, open your manifest file to add this permission for INTERNET:
|
1 |
<uses-permission android:name="android.permission.INTERNET" /> |
The web page won’t be loaded into your app without this permission. […]
I think it’s very convenient for us developers, being able to name our variables dynamically. I’ll show you how to do it in PHP. 🙂 For example, we have variable $foo with “bar” as value like this:
|
1 2 |
<?php $foo = "bar"; |
If we want to create a variable named based on the “value” of variable $foo, this is […]
The following string variable’s value will get the full URL of the current page, including GET arguments/params, if present.
|
1 2 3 4 5 6 |
<?php $full_current_url = "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; echo $full_current_url; ?> |
To get the full URL of current page but WITHOUT the GET args/params, do this instead:
|
1 2 3 4 5 6 |
<?php $full_current_url = "http://" . strtok($_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'], "?"); echo $full_current_url; ?> |
The strtok function will return only the part of the URL string up to the character before question […]
Hey! 🙂 If you are encoding your Arrays to JSON in PHP using json_encode() and the function adds backslash before your slashes, I’m gonna show you a quick fix. This is my original code:
|
1 2 3 4 5 6 |
<?php $arr = array(); $arr['success'] = true; $arr['message'] = "Please enter email/phone number."; echo json_encode($arr); ?> |
And the result is: {“success”:true,”message”:”Please enter email\/phone number.”} See the added backslash before the slash? Ugly, right? To avoid that, […]
A JSON Parser developed by some members of the Android dev team. But a few weeks after completion of the parser, several methods became deprecated. And when we use that parser, we get errors. Part of the stack trace is as follows:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
[...] E/AndroidRuntime: Caused by: android.os.NetworkOnMainThreadException at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1148) at java.net.InetAddress.lookupHostByName(InetAddress.java:405) at java.net.InetAddress.getAllByNameImpl(InetAddress.java:251) at java.net.InetAddress.getAllByName(InetAddress.java:229) at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137) at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) [...] |
Not sure if the NetworkOnMainThreadException is being thrown because of the deprecated […]
For some reason you might need to get the data type of your Java variable. Here’s an example of what you can try:
|
1 2 3 |
String date_created = "2016-02-04"; String data_type = date_created.getClass().getSimpleName(); |
Then do whatever you like with data_type, whose value should be “String”. 🙂
Here’s the content of my MainActivity class where I log the IMEI of my test device.
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
package net.catzie.playground; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.telephony.TelephonyManager; import android.util.Log; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); String deviceID = telephonyManager.getDeviceId(); Log.d("Device IMEI", deviceID); } } |
You also need to add this permission to your AndroidManifest.xml file:
|
1 |
<uses-permission android:name="android.permission.READ_PHONE_STATE" /> |
Place it inside the <manifest></manifest> tag, but same level as <application></application>. Source: How to get the device’s IMEI/ESN programmatically in android?
If you want to trace the name of the method that’s being executed, the Java code snippet in this page might help you. This is especially handy when you are debugging by tracking every method that is executed. You can enclose these lines of codes in a function that you call in every method — […]