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Alert messagebox toast Android example code


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Toast in Android application is equivalent of Alert in JavaScript or MessageBox in WinApi.


// Toast android.widget.Toast.makeText(Context context, CharSequence text, int duration)
// public static Toast makeText (Context context, CharSequence text, int duration) 

Toast.makeText(getApplicationContext(), "Hello world!",
                  Toast.LENGTH_SHORT).show();


396LW NO topic_id




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Další témata ....(Topics)


311

Import project Android Eclipse | import-project-android-eclipse


Import a new Android project for example downloaded from internet via Eclipse into project folder.

  1. Right click into projects explorer in Eclipse and select Import

  2. Android

  3. Existing Android Code Into Workspace

  4. Root Directory (select folder of downloaded project)

  5. Check your downloaded project

  6. Check Copy project into Workspace

  7. Finish (press)




289

How disable Choreographer in LogCat Eclipse Android | how-to-disable-choreographer-messages


choreographer skipped frames
Create filter with TAG regex to disable Choreographer messages, see code and picture below:

^((?!Choreographer).)*$


android/choreographer-disable-remove.png
302

WebView.loadData utf-8 encoding Android | webview-loaddata-utf-8-encoding-android


Try this solution:

String DATA = "Html text....bla bla bla. Hellou world!  čšřžěéá";
String HEADERHTML = 
"<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">" 
+"<html>  <head>  <meta http-equiv="content-type" content="text/html; charset=utf-8">"  
+"</head>  <body>";
String FOOTERHTML = "</body></html>";
WebView mWebView.loadData(HEADERHTML+DATA+FOOTERHTML,"text/html; charset=UTF-8",null);

366

View getId is null Android | view-getid-is-null-android


If you create a button or view programmatically with OnClickListener you can set a tag key before button in parent layout is added.
And get correct button by this tag getTag() instead getId() in OnClickListener etc.

Button button = new Button(getApplicationContext());
int idOfButton = button.getId(); // return -1

button.setTag("my_button");
String sTag = (String) button.getTag(); // return "my_button"

35

Android startup tutorial for developers video | android-startup-tutorial-for-developers-video


How install Android emulator on PC
//developer.android.com/sdk/installing.html

Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download