Tag：android
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Time：2020-7-10
When the mobile phone is placed horizontally or vertically in the app, the horizontal / vertical screen of the screen is switched. Record the key information and implementation process. To put it bluntly, there are two ways to realize the screen automatic / manual rotation: One is defined in the code of the project. In […]
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Time：2020-7-8
preface For Android playing some short sound effects, such as prompt tone or ring tone, soundpool can save more resources than using mediaplayer, and can play multiple sound effects at the same time, and can set different playback quality for different sound effects realization The specific function of soundpool will not be explained any more, […]
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Time：2020-7-7
1、 Introduction to soundpool We used mediaplayer to play audio files before, but when our application needs to play intensive and short audio effects frequently, calling mediaplayer will take up a lot of resources of the system, and the delay time is long, so it does not support multiple audio playing at the same time. […]
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Time：2020-7-6
Whether it is WiFi or 4G network, after the establishment of network connection, it is to access the Internet resources, not to directly access the LAN resources. For example, when two people are together, a wants to transfer the video on the mobile phone to B. usually, the mobile phone QQ is opened and the […]
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Time：2020-7-5
In this paper, we share the specific code of Android handwritten signature display for your reference. The specific content is as follows Code is simple, do not send demo, paste code directly package com.xx; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.MotionEvent; import android.view.View; import […]
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Time：2020-7-4
demand As follows, to achieve a circular water ripple with progress, two layers of water ripple need to be gradually displayed, and there is an arc progress on the periphery. thinking Peripheral arc progress: can passcanvas.drawArc()realization. Because the arc needs to realize gradient, you can set it by setting the brushshader(SweepGradient)In order to ensure that […]
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Time：2020-7-1
Fragment features Fragment is similar to activity in that it has its own life cycle and layout. It is equivalent to a mini activity Fragments can be part of an activity, and an activity can have multiple fragments A fragment can be reused by multiple activities Fragments can be added, removed and exchanged dynamically when […]
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Time：2020-6-30
React native imitates Netease cloud music mobile phone client and is compatible with Android and IOS platforms. GitHub full source address https://github.com/yezihaohao/NeteaseCloudMusicSource blog addressGold mining address The old rules, the first picture ~? Overview Music playing <!–more–> Video playback Song list user interface Station details Main technology stack and dependence on third party Library: Click […]
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Time：2020-6-30
1、 Meet spinner Spinner is actually a list selection box. However, Android’s list selection box does not need to display a drop-down list, but is equivalent to a pop-up menu for users to choose from. Both spinner and gallery inherit absspinner, and absspinner inherits AdapterView. Therefore, it also shows the characteristics of AdapterView: as long […]
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Time：2020-6-29
Recently, I have done mixed development with app, and learned the method interworking between H5 and native app First, we define methods for app side to use (take Vue as an example) Define a method name in methods VContent() { console.log (“method for app”) }, Then we can mount this method to window in the […]
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Time：2020-6-25
Android’s message prompt (vibration and prompt tone) implementation code is as follows: public class VibratorUtil { protected AudioManager audioManager; protected Vibrator vibrator; private Ringtone ringtone; private static final int MIN_ TIME_ Out = 4000; // time interval long lastNotificationTime; public VibratorUtil() { audioManager = (AudioManager) MyApp.getContext ().getSystemService( Context.AUDIO_ Service); // this method is called by […]
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Time：2020-6-24
With layer list, multiple drawables can be displayed in order. By default, drawables in all items will be automatically scaled according to the size of the attached view, Items in the layer list are stacked from the bottom to the top in order, that is, items defined first are stacked at the bottom, and items […]
