It contain some fixed Code we all write in every application

Android God Cheat Sheet

Button Background Selector insdide drawble folder ----------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/numpad_button_bg_selected" android:state_selected="true"></item>
    <item android:drawable="@drawable/numpad_button_bg_pressed" android:state_pressed="true"></item>
    <item android:drawable="@drawable/numpad_button_bg_normal"></item>

</selector>

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Text Color  Selector inside color folder ----------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_pressed="true"
           android:color="#000000" /> <!-- pressed -->
     <item android:state_focused="true"
           android:color="#000000" /> <!-- focused -->
     <item android:color="#FFFFFF" /> <!-- default -->
 </selector>
 
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out Of Memory  -------------------------------------------------
 <application
        android:largeHeap="true" >
		
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Support Arabic  -------------------------------------------------
 <application
             android:supportsRtl="true" >
			 
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Call Phone Intent -------------------------------------------------
      Intent mobile_2 =  new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "0530556600"));
      startActivity(mobile_2);
	  
	  <uses-permission android:name="android.permission.CALL_PHONE" />

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MarshMewllo ask for Permission -------------------------------------------------
 if(Build.VERSION.SDK_INT > 22)
                    {
                        if(ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
                            ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
                    }
	
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Start activitu with animation  -------------------------------------------------

                              startActivity(new Intent(mContext, VisionActivity.class));
                              overridePendingTransition(R.anim.fade_in, R.anim.fade_out);

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fade_in  -------------------------------------------------							  
	
    <?xml version="1.0" encoding="utf-8"?>
	<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromAlpha="0.0"
    android:interpolator="@android:anim/accelerate_interpolator"
    android:toAlpha="1.0" />
	
	
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fade_out  -------------------------------------------------	

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fillAfter="true"
    android:fromAlpha="1.0"
    android:interpolator="@android:anim/accelerate_interpolator"
    android:toAlpha="0.0" />

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Share in app  -------------------------------------------------	

 Uri localUri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), BitmapFactory.decodeResource(getResources(), R.drawable.logo), null, null));
            Intent localIntent = new Intent("android.intent.action.SEND");
            localIntent.setType("image/*");
			Intent sharingIntent = new Intent(Intent.ACTION_SEND);
			sharingIntent.setType("text/plain");
			sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Text");
			sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject");
			startActivity(Intent.createChooser(sharingIntent, "Share using"));
            return;

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Broder xml  in drawable folder-------------------------------------------------	

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle">
  <corners
      android:radius="2dp"
      android:topRightRadius="0dp"
      android:bottomRightRadius="0dp"
      android:bottomLeftRadius="0dp" />
  <stroke
      android:width="1dp"
      android:color="@android:color/white" />
</shape>


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Hide Keyboard when Activity start  -------------------------------------------------
            android:windowSoftInputMode="stateHidden"
			
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set Text Password Type  -------------------------------------------------

  et_password.setInputType(InputType.TYPE_CLASS_TEXT |   InputType.TYPE_TEXT_VARIATION_PASSWORD);

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Import jar lib  -------------------------------------------------
    compile files('libs/picasso-2.5.2.jar')


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Intenet Permission  -------------------------------------------------
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    


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Check get itent   -------------------------------------------------

        if (getIntent() != null && getIntent().getExtras() != null)
            TYPE = getIntent().getStringExtra("TYPE");



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Start Activity and remove from Stack   -------------------------------------------------

  Intent intent = new Intent(from, to);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
        from.startActivity(intent);
        from.finish();




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no Toolbar in Manifest  ------------------------------------------------

 android:theme="@style/AppTheme.NoActionBar"


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Circular Image  ------------------------------------------------
 compile 'de.hdodenhof:circleimageview:2.0.0'




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Indicator  ------------------------------------------------
       compile 'com.wang.avi:library:1.0.5'
       compile 'com.nineoldandroids:library:2.4.0'



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Shadow xml  ------------------------------------------------

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <layer-list>
        <item android:right="5dp" android:top="5dp">
            <shape>
                <corners android:radius="3dp" />
                <solid android:color="#D6D6D6" />
            </shape>
        </item>
        <item android:bottom="2dp" android:left="2dp">
            <shape>
                <gradient android:angle="270" 
                    android:endColor="#E2E2E2" android:startColor="#BABABA" />
                <stroke android:width="1dp" android:color="#BABABA" />
                <corners android:radius="4dp" />
                <padding android:bottom="10dp" android:left="10dp" 
                    android:right="10dp" android:top="10dp" />
            </shape>
        </item>
    </layer-list>
</item>

</selector>



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Make tabs text lowercase  ------------------------------------------------

If you use "android.support.design.widget.TabLayout" needed to set

< app:tabTextAppearance="@android:style/TextAppearance.Widget.TabWidget">




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Tab layout tabs selected Background  ------------------------------------------------


accepted
You need to define a selector as a drawable, and also have a drawable for the selected/unselected states.

First, the selector, tab_background.xml in the drawable folder:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/tab_background_selected" android:state_selected="true" />
    <item android:drawable="@drawable/tab_background_unselected" android:state_selected="false" android:state_focused="false" android:state_pressed="false" />
</selector>
Then, tab_background_selected.xml in the drawable folder:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <solid android:color="#d13fdd1a" />
</shape>
Then, tab_background_unselected.xml in the drawable folder:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <solid android:color="#3F51B5" />
</shape>
Finally, in your styles.xml, specify the selector to use:

<style name="Base.Widget.Design.TabLayout" parent="android:Widget">
    <item name="tabBackground">@drawable/tab_background</item>
</style>
Result with the example colors above:




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REtrofit timeout  ------------------------------------------------


final OkHttpClient okHttpClient = new OkHttpClient.Builder()
        .readTimeout(60, TimeUnit.SECONDS)
        .connectTimeout(60, TimeUnit.SECONDS)
        .build();



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onConfigurationChanged rotation  ------------------------------------------------

   public void onConfigurationChanged(Configuration paramConfiguration)
    {
        super.onConfigurationChanged(paramConfiguration);
    }

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Open Google Map location by longitude  ------------------------------------------------
https://developer.android.com/guide/components/intents-common.html#Maps

  private void openLocationMap(float late, float lng) {
        String uri = String.format(Locale.ENGLISH, "geo:%f,%f", late, lng);
       String uri = String.format(Locale.ENGLISH, "geo:<" + late  + ">,<" + lng + ">?q=<" + late  + ">,<" + lng + ">(" + label + ")");

        Intent intent = new Intent(Intent.ACTION_VIEW);
        if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
            intent.setData(Uri.parse(uri));
        }
        else  {
            String url = "https://www.google.com.eg/maps/@"+ late +"," + lng +",13z";
            intent.setData(Uri.parse(url));
            MLogger.MLog(url);
        }
        getActivity().startActivity(intent);
    }


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Detect arabic or ENGLISH language  ------------------------------------------------

    public static boolean isProbablyArabic(String s) {
        for (int i = 0; i < s.length(); ) {
            int c = s.codePointAt(i);
            if (c >= 0x0600 && c <= 0x06E0)
                return true;
            i += Character.charCount(c);
        }
        return false;
    }



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How To Open mail  ------------------------------------------------

  Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType("message/rfc822");
        intent.putExtra(Intent.EXTRA_SUBJECT, "Please add your Subject");
        intent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] {mail});
        intent.putExtra(Intent.EXTRA_TEXT, "Please add your Message");
        Intent mailer = Intent.createChooser(intent, null);
        startActivity(mailer);

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Open the Activity from outside the scope in Manifest  ------------------------------------------------
           
            android:exported="true"


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Open the Activity from outside the scope in Manifest  ------------------------------------------------


Will be updated ...