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任何组件块 · App Inventor 2 中文网
...列表中所有按钮的例子
三种主要组件块类型（即事件、方法和属性）中的每一种都具有相应的“任何组件”块。
属性
属性的“任何组件”块是任何组件块的最简单版本。 属性 getter（如下所示）采用单个组件并返回该组件的...
Full Screen DialogFragment in Android
...
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="1000dp"
android:minHeight="1000dp">
</LinearLayout&g...
How to force use of overflow menu on devices with menu button
...tually prevented by design. According to the Compatibility Section of the Android Design Guide,
"...the action overflow is available from the menu hardware key. The resulting actions popup... is displayed at the bottom of the screen."
You'll note in the screenshots, phones with a physical menu b...
Android: What is android.R.id.content used for?
Anybody could explain the meaning of "android.R.id.content" ?
3 Answers
3
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Setting global styles for Views in Android
...r setting the style individually.
If you take a look in themes.xml in the Android source, you will see a bunch of attributes for the default style for various widgets. The key is the textViewStyle (or editTextStyle, etc.) attribute which you override in your custom theme. You can override these in ...
Integrate ZXing in Android Studio
...
I was integrating ZXING into an Android application and there were no good sources for the input all over, I will give you a hint on what worked for me - because it turned out to be very easy.
There is a real handy git repository that provides the zxing an...
Padding between ActionBar's home icon and title
...style definition, for instance like this in res/style.xml:
<item name="android:actionBarStyle">@style/MyActionBar</item>
<style name="MyActionBar" parent="@android:style/Widget.Holo.Light.ActionBar">
<item name="android:background">#3f51b5</item>
<i...
How to dynamically update a ListView on Android [closed]
On Android, how can I a ListView that filters based on user input, where the items shown are updated dynamically based on the TextView value?
...
Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
...
As stated in Android's Support Library Overview, it is considered good practice to include the support library by default because of the large diversity of devices and the fragmentation that exists between the different versions of Androi...
How to implement the Android ActionBar back button?
...Selected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
The function NavUtils.navigateUpFromSam...