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What's the point of 'meta viewport user-scalable=no' in the Google Maps API
...it's there for.
More recently, as @ehfeng notes in his answer, Chrome for Android (and perhaps others) have taken advantage of the fact that there's no native browser zooming on pages with a viewport tag set like that. This allows them to get rid of the dreaded 300ms delay on touch events that the ...
Referencing a string in a string array resource with xml
...you can, but there seems to be a workaround:.
If you take a look into the Android Resource here:
http://developer.android.com/guide/topics/resources/string-resource.html
You see than under the array section (string array, at least), the "RESOURCE REFERENCE" (as you get from an XML) does not speci...
Media Player called in state 0, error (-38,0)
...tested and working fine:
package com.example.com.mak.mediaplayer;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.app.Activity;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bu...
Java: random long number in 0
...
Starting from Java 7 (or Android API Level 21 = 5.0+) you could directly use ThreadLocalRandom.current().nextLong(n) (for 0 ≤ x < n) and ThreadLocalRandom.current().nextLong(m, n) (for m ≤ x < n). See @Alex's answer for detail.
If you ar...
How to convert a Bitmap to Drawable in android?
How can I convert a Bitmap image to Drawable ?
10 Answers
10
...
App Inventor 2 能否实现后台推送通知？源码级深度调研 - App应用开发 - 清...
...; App（即使未打开）
关键特征：
1. 操作系统级别：由 Android/iOS 系统进程接收，不需要 App 运行
2. 持久连接：手机系统与推送服务器保持长连接（不是 App 自己的连接）
3. 省电：所有 App 共享同一条系统级连接
4. 可靠性高：...
MLKitObjectDetector 拓展：离线目标检测（找出物体并画框） · App Inventor 2 中文网
...性
事件
方法
运行环境：AI 伴侣联机需要 Android 11 及以上
常见问题
« 返回首页
MLKitObjectDetector 拓展
找出图片里有哪些物体，并给出每个物体的位置矩形框。
为什么选它：
完全...
App Inventor 2 TaifunBattery 电池管理器拓展：获取电量、电池健康状态、...
...容量的整数百分比（无小数部分）。
需要 API 级别 21、Android 5、Lollipop。
以微安为单位返回平均电池电流（整数）。正值表示从充电源进入电池的净电流，负值表示从电池放电的净电流。计算平均值的时间段可能取决于...
Running code in main thread from another thread
In an android service I have created thread(s) for doing some background task.
16 Answers
...
MLKitFaceMesh 拓展：面部网格（468 个关键点） · App Inventor 2 中文网
...性
事件
方法
运行环境：AI 伴侣联机需要 Android 11 及以上
常见问题
« 返回首页
MLKitFaceMesh 拓展
检测 468 个面部关键点（带 x/y/z 坐标），用于 AR 贴纸定位、美颜、面部特效。
为什么...