CODEWITHSUNDEEP
androidandroid-widget
Vinayak Bevinakatti
Vinayak Bevinakatti

Reputation: 40513

Android - Is It possible to disable the click of home button

I have an application, when it launches I have to disable all the buttons on Android device, I succeeded in disabling end call and others. I need to disable home button click. It should not produce any action on click.

Any suggestions highly appreciated

Upvotes: 61

Views: 74763

Answers (6)

amiekuser
amiekuser

Reputation: 1630

I found a way to tackle HOME key. For your application set the manifest as:

<action android:name="android.intent.action.MAIN" /> 
<category android:name="android.intent.category.HOME" /> 
<category android:name="android.intent.category.DEFAULT" />                            
<category android:name="android.intent.category.MONKEY"/>

Now your application is an alternate Launcher application.

Use the adb, and disable the launcher application using package manager

pm disable com.android.launcher2

Now the Home key press will always stay in the same screen.

Upvotes: 5

synic
synic

Reputation: 26678

I'm pretty sure Toddler Lock just uses a BroadcastReciever and listens for Intent.ACTION_MAIN and the category Intent.CATEGORY_HOME - that's why when you first launch it, it tells you to check the "use this application as default" box, and makes you select toddler lock.

So, it's not really blocking the Home button at all, it's just setting itself up as the default broadcast receiver for:

Intent i = new Intent(Intent.ACTION_MAIN);
i.addCategory(Intent.CATEGORY_HOME);

When you launch Toddler Lock, it probably sets an internal flag, and if you press the home button, it just brings the window to the front. If the flag is not set, it probably launches Launcher explicitly.

I hope that makes sense. It's just a theory, but I'm almost 100% sure that's how it's done.

Upvotes: 29

Jeffrey
Jeffrey

Reputation: 189

Add following code to your activity:

@override

public void onAttachedToWindow()
{  
       this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);     
       super.onAttachedToWindow();  
}

Edit:

This works in all older version of android. But will not work in ICS and jelly bean and will give you crash in app

What does this 4 line java code means in android application?

Upvotes: 18

davide.gironi
davide.gironi

Reputation: 337

here you can find my Android sample application which persist on the home page. Home, Back, Call, Power button are disabled. User can end the application only by typing a password.

Upvotes: 5

Jean-Fran&#231;ois
Jean-Fran&#231;ois

Reputation: 382

Add this in your manifest.xml for your main activity:

<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.HOME" />

The HOME button will always (re-)launch your activity. Works in Froyo.

Upvotes: 11

Richard Rout
Richard Rout

Reputation: 1316

A further addition to Jeffreys post, here is something that worked for me (and still allows translucent theme)

@Override
public void onAttachedToWindow()
{  
    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);     
    super.onAttachedToWindow();  
}

Becuase it makes the keyguard come up, you could also just disable the keyguard whilst the app is in use:

KeyguardManager keyguardManager = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
lock.disableKeyguard();

This works really well for making your own keyguard app.

Upvotes: 2

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