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FFmpeg on Android
...terface to launch the commands
FFprobe or FFmpeg could be removed from the APK, check the wiki https://github.com/bravobit/FFmpeg-Android/wiki
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Android - Writing a custom (compound) component
... tag as your XML root
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Your Layout -->
</merge>
Check this article.
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Android - Center TextView Horizontally in LinearLayout
...
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_h...
Force Screen On
...="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:keepScreenOn="true" >
Docs http://developer.android.com/reference/android/view/View.html#attr_android%3akeepScre...
Understanding keystore, certificates and alias
...d and the public key (the certificate) for that alias is embedded into the APK.
Now to answer your question, you can only release an update to an application that was signed with the alias 'foo' by signing the update again with the same alias. Losing the keystore where your alias is stored would pr...
How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
...viewpager2.widget.ViewPager2
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:orientation="vertical" />
Using code
To disable swiping in viewpager2 use
viewPager2.setUserInputEnabled(false);
To enable swiping in viewpager2 Use
viewPager2.s...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...这些连接以及设备发现和广告的规则由蓝牙通用访问配置文件 (GAP) 管理，这是所有 BLE 设备都必须遵守的强制性框架。
广播者与观察者 - 在这种情况下，嵌入在各种物联网设备中的传感器将定期向监听范围内的智能手机发送广...
Webview load html from assets directory
...ity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#FFFFFF"
android:layout_height="match_parent">
<WebView
android:layout_width="match_parent"
android:id="@+id/webview"
android:layout_height...
Creating a system overlay window (always on top)
...of such a button is the install button when you try to install third party apks. Any app can display such a button if adding to the view layout the following line:
android:filterTouchesWhenObscured="true"
If you display an always-on-top window over a "Secured Button", so all the secured button pa...
Set TextView text from html-formatted string resource in XML
...View.
<RelativeLayout
...
xmlns:android_ex="http://schemas.android.com/apk/res-auto"
...>
<tv.twelvetone.samples.textviewex.TextViewEx
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/string_with_html"
android_ex:isHtml="true"
...