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/* | |
* The MIT License (MIT) | |
* | |
* Copyright (c) 2015 Alex Fu | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy | |
* of this software and associated documentation files (the "Software"), to deal | |
* in the Software without restriction, including without limitation the rights | |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
* copies of the Software, and to permit persons to whom the Software is |
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/* | |
* Copyright (C) 2014 The Android Open Source Project | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software |
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public class ColorUtils { | |
private static final double LM_RED_COEFFICIENT = 0.2126; | |
private static final double LM_GREEN_COEFFICIENT = 0.7152; | |
private static final double LM_BLUE_COEFFICIENT = 0.0722; | |
public static int calculateRelativeLuminance(int color) { | |
int red = (int) (Color.red(color) * LM_RED_COEFFICIENT); | |
int green = (int) (Color.green(color) * LM_GREEN_COEFFICIENT); | |
int blue = (int) (Color.blue(color) * LM_BLUE_COEFFICIENT); | |
return red + green + blue; |
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import android.content.Context; | |
import android.content.res.Resources; | |
import android.content.res.TypedArray; | |
import android.os.Build; | |
import android.util.AttributeSet; | |
import android.util.TypedValue; | |
import android.widget.FrameLayout; | |
/** | |
* A FrameLayout that fits it's content into the viewable |
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public class DontScaleMe extends Activity { | |
@Override | |
protected void onCreate(Bundle savedInstanceState) { | |
setContentView(R.layout.alayout); | |
ViewGroup parent = findViewById(R.id.root); | |
Bitmap bitmap = obtainBitmapFromSomewhere(); | |
// This will scale your Bitmap to fit it's bounds. | |
parent.setBackground(new BitmapDrawable(getResources(), bitmap)); |
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public class MyActivity extends Activity { | |
@Override | |
protected void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
if(windowActionBarOverlay()) { | |
// Do something | |
} | |
} | |
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import android.content.Context; | |
import android.content.ContextWrapper; | |
import android.content.res.AssetManager; | |
import android.content.res.Configuration; | |
import android.content.res.Resources; | |
import android.graphics.drawable.Drawable; | |
import android.util.DisplayMetrics; | |
import android.util.Log; | |
/** |
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/* | |
* Copyright (C) 2006 The Android Open Source Project | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software |
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import android.content.Context; | |
import android.content.res.ColorStateList; | |
import android.graphics.Canvas; | |
import android.graphics.ColorFilter; | |
import android.graphics.Paint; | |
import android.graphics.drawable.Drawable; | |
import android.util.AttributeSet; | |
import android.widget.EditText; | |
/** |
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public class FragmentObserver extends Observable { | |
@Override | |
public void notifyObservers() { | |
setChanged(); // Set the changed flag to true, otherwise observers won't be notified. | |
super.notifyObservers(); | |
} | |
} |