每次吃一点Androidの小知识

2017-03-30 本文已影响197人耑意儿

目录：
1、Service
2、AndroidManifest
3、Github搜索技巧
4、AndroidStudio主题设置

Android小仙

1. Service

Service lifeCycle
从上图可以看到，onStart()方法被onStartCommand()方法取代了。
那么问题来了，onStart()和onStartCommand()的区别是什么呢？
onStart()是android2.0以下的版本使用的，而onStartCommand()则是android2.0以上的版本使用的。
两个可以同时使用不会有冲突，执行的时候先调用onStartCommand()，再调用onStart()。

1.1. `onStartCommand()`方法

public @StartResult int onStartCommand(Intent intent, @StartArgFlags int flags, int startId) {
        onStart(intent, startId);
        return mStartCompatibility ? START_STICKY_COMPATIBILITY : START_STICKY;
    }

主要看四种返回值类型

START_STICKY：如果service进程被kill掉，保留service的状态为开始状态，但不保留递送的intent对象。随后系统会尝试重新创建service，由于服务状态为开始状态，所以创建服务后一定会调用onStartCommand(Intent,int,int)方法。如果在此期间没有任何启动命令被传递到service，那么参数Intent将为null。
START_NOT_STICKY：“非粘性的”。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统不会自动重启该服务
START_REDELIVER_INTENT：重传Intent。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统会自动重启该服务，并将Intent的值传入。
START_STICKY_COMPATIBILITY：START_STICKY的兼容版本，但不保证服务被kill后一定能重启。

1.2. Service永不被kill的方法

将service优先级设置到最高，1000
onStartCommand return START_STICKY
在Service的onDestroy中，发送广播重启自己
设置android:persistent="true"
Service提升为前台进程级别
就是在onStartCommand里面调用 startForeground()方法把Service提升为前台进程级别，然后再onDestroy里面要记得调用stopForeground ()方法。

关于进程保活的两三事——新手升级经验卡

1.3. 相对强大的进程保活方案

参考资料：
双进程守护，驻留，杀不死服务：MarsDaemon
其他：参考同类APP的做法，如：<a>闪铃</a>

1.4. 用户配置保活

设置悬浮窗
设置自启动
设置常驻服务
设置允许高耗电

2. AndroidManifest

2.1. Application节点说明

先上例子

    <application
        android:name=".MyApplication"
        android:allowBackup="true"
        android:allowClearUserData="false"
        android:excludeFromRecents="true"
        android:hardwareAccelerated="true"
        android:largeHeap="true"
        android:icon="@drawable/icon"
        android:label="@string/app_name"
        android:persistent="true"
        android:theme="@style/AppTheme" >
    </application>

简单的不说，来看看下面的

android:allowBackup="true"
允许应用程序参与备份。如果将该属性设置为false,则即使备份整个系统，也不会执行这个应用程序的备份操作，而整个系统备份能导致所有应用程序数据通过ADB来保存。其默认值为true。
android:excludeFromRecents="true"
使应用从最近使用应用列表中剔除
android:hardwareAccelerated="true"
使用硬件加速功能。指示硬件加速渲染功能是否对应用程序中的所有Activity和View启用。其默认值是false。
android:persistent="true"
将应用设置为永久性应用，开机自启。实质就是拥有persistent=true属性的app将不能被kill或kill后会自动重启。其默认值是false。
android:largeHeap="true"此属性指示应用程序是否使用一个比较大的堆创建。它的默认值是false。
android:supportsRtl=true：支持屏幕从右到左
参考资料：Android清单文件详解(五)----<application>的属性详解

2.2. 创建桌面快捷方式适配不同机型

各个手机产商自定义的创建桌面快捷方式的权限
参考：Permissions used in Alipay 9.6.6

uses-permission: name='com.alipay.permission.ALIPAY_UPDATE_CREDENTIALS'
uses-permission: name='com.android.launcher.permission.INSTALL_SHORTCUT'
uses-permission: name='android.permission.BLUETOOTH'
uses-permission: name='android.permission.CHANGE_WIFI_STATE'
uses-permission: name='android.permission.CAMERA'
uses-permission: name='android.permission.ACCESS_NETWORK_STATE'
uses-permission: name='android.permission.MODIFY_AUDIO_SETTINGS'
uses-permission: name='com.yunos.permission.TYID_MGR_SERVICE'
uses-permission: name='android.permission.RECEIVE_SMS'
uses-permission: name='android.permission.AUTHENTICATE_ACCOUNTS'
uses-permission: name='com.alipay.permission.ALIPAY_USE_CREDENTIALS'
uses-permission: name='com.aliyun.permission.TYID_MGR_SERVICE'
uses-permission: name='android.permission.BATTERY_STATS'
uses-permission: name='android.permission.READ_PHONE_STATE'
uses-permission: name='android.permission.WRITE_EXTERNAL_STORAGE'
uses-permission: name='android.permission.NFC'
uses-permission: name='android.permission.RECORD_AUDIO'
uses-permission: name='android.permission.READ_SMS'
uses-permission: name='com.taobao.permission.UPDATE_CREDENTIALS'
uses-permission: name='com.yunos.permission.STORAGE_SERVICE'
uses-permission: name='com.sonyericsson.home.permission.BROADCAST_BADGE'
uses-permission: name='com.android.launcher.permission.UNINSTALL_SHORTCUT'
uses-permission: name='android.permission.READ_CONTACTS'
uses-permission: name='android.permission.USE_CREDENTIALS'
uses-permission: name='android.permission.VIBRATE'
uses-permission: name='com.yunos.permission.TYID_SERVICE'
uses-permission: name='android.permission.ACCESS_FINE_LOCATION'
uses-permission: name='android.permission.FLASHLIGHT'
uses-permission: name='com.taobao.permission.USE_CREDENTIALS'
uses-permission: name='android.permission.ACCESS_COARSE_LOCATION'
uses-permission: name='android.permission.MANAGE_ACCOUNTS'
uses-permission: name='android.permission.CALL_PHONE'
uses-permission: name='android.permission.READ_LOGS'
uses-permission: name='android.permission.GET_ACCOUNTS'
uses-permission: name='android.permission.GET_TASKS'
uses-permission: name='android.permission.ACCESS_WIFI_STATE'
uses-permission: name='com.android.launcher.permission.READ_SETTINGS'
uses-permission: name='com.htc.launcher.permission.READ_SETTINGS'
uses-permission: name='com.majeur.launcher.permission.UPDATE_BADGE'
uses-permission: name='com.aliyun.permission.TYID_SERVICE'
uses-permission: name='android.permission.WAKE_LOCK'
uses-permission: name='android.permission.BLUETOOTH_ADMIN'
uses-permission: name='android.permission.RECEIVE_BOOT_COMPLETED'
uses-permission: name='android.permission.INTERNET'
uses-permission: name='android.permission.SYSTEM_ALERT_WINDOW'
uses-permission: name='com.htc.launcher.permission.UPDATE_SHORTCUT'
uses-permission: name='android.permission.WRITE_SETTINGS'
uses-permission: name='com.anddoes.launcher.permission.UPDATE_COUNT'
uses-permission: name='android.permission.READ_PROFILE'
uses-permission: name='android.permission.BROADCAST_STICKY'
uses-permission: name='com.aliyun.permission.STORAGE_SERVICE'
uses-permission: name='nxp.permission.ACCESS_WALLET_SERVICE'
uses-permission: name='com.samsung.android.authservice.permission.READ_CONTENT_PROVIDER'
uses-permission: name='android.permission.USE_FINGERPRINT'
uses-permission: name='android.permission.MANAGE_FINGERPRINT'
permission: com.eg.android.AlipayGphone.permission.MIPUSH_RECEIVE
uses-permission: name='com.eg.android.AlipayGphone.permission.MIPUSH_RECEIVE'
uses-permission: name='com.miui.mihome2.permission.READ_SETTINGS'
uses-permission: name='com.miui.mihome2.permission.WRITE_SETTINGS'
uses-permission: name='com.aliyun.homeshell.permission.WRITE_SETTINGS'
uses-permission: name='com.aliyun.homeshell.permission.READ_SETTINGS'
uses-permission: name='com.lenovo.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lenovo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.iLoong.permission.WRITE_SETTINGS'
uses-permission: name='com.iLoong.permission.READ_SETTINGS'
uses-permission: name='cn.nubia.launcher.permission.WRITE_SETTINGS'
uses-permission: name='cn.nubia.launcher.permission.READ_SETTINGS'
uses-permission: name='com.smartisanos.launcher.WRITE_DATABASE'
uses-permission: name='com.smartisanos.launcher.READ_DATABASE'
uses-permission: name='com.smartisanos.launcher.data.ExportDataProvider'
uses-permission: name='com.teslacoilsw.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.teslacoilsw.launcher.permission.READ_SETTINGS'
uses-permission: name='com.meizu.flyme.launcher.permission.READ_SETTINGS'
uses-permission: name='com.meizu.flyme.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.ztemt.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.ztemt.launcher.permission.READ_SETTINGS'
uses-permission: name='com.zte.lqsoft.launcher.permission.READ_SETTINGS'
uses-permission: name='com.zte.lqsoft.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.baoruan.launcher2.permission.WRITE_SETTINGS'
uses-permission: name='com.baoruan.launcher2.permission.READ_SETTINGS'
uses-permission: name='com.fineos.launcher.permission.READ_SETTINGS'
uses-permission: name='com.fineos.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.ibingo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.ibingo.launcher.permission.READ_SETTINGS'
uses-permission: name='com.zui.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.zui.launcher.permission.READ_SETTINGS'
uses-permission: name='com.qihoo360.screenlock.permission.READ_LOCAL_THEME'
uses-permission: name='com.qihoo360.screenlock.permission.WRITE_LOCAL_THEME'
uses-permission: name='com.zte.mifavor.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.zte.mifavor.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lo.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.android.tpwlauncher2.permission.WRITE_SETTINGS'
uses-permission: name='com.android.tpwlauncher2.permission.READ_SETTINGS'
uses-permission: name='com.android.sprdlauncher1.permission.READ_SETTINGS'
uses-permission: name='com.android.sprdlauncher1.permission.WRITE_SETTINGS'
uses-permission: name='com.s.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.s.launcher.permission.READ_SETTINGS'
uses-permission: name='com.zte.mobile.ZteLauncher3D.permission.READ_SETTINGS'
uses-permission: name='com.zte.mobile.ZteLauncher3D.permission.WRITE_SETTINGS'
uses-permission: name='com.android.launcher23.permission.READ_SETTINGS'
uses-permission: name='com.android.launcher23.permission.WRITE_SETTINGS'
uses-permission: name='com.mgyun.permission.READ_SETTINGS'
uses-permission: name='com.mgyun.permission.WRITE_SETTINGS'
uses-permission: name='com.asus.launcher3.permission.READ_SETTINGS'
uses-permission: name='com.asus.launcher3.permission.WRITE_SETTINGS'
uses-permission: name='com.tsf.shell.permission.READ_SETTINGS'
uses-permission: name='com.tsf.shell.permission.WRITE_SETTINGS'
uses-permission: name='com.tul.aviate.permission.READ_SETTINGS'
uses-permission: name='com.tul.aviate.permission.WRITE_SETTINGS'
uses-permission: name='com.lenovo.launcherhdmarket.permission.READ_SETTINGS'
uses-permission: name='com.lenovo.launcherhdmarket.permission.WRITE_SETTINGS'
uses-permission: name='com.hola.launcher.permission.READ_SETTINGS'
uses-permission: name='com.hola.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.qihoo360.home.permission.WRITE_SETTINGS'
uses-permission: name='com.qihoo360.home.permission.READ_SETTINGS'
uses-permission: name='com.slim.slimlauncher.permission.READ_SETTINGS'
uses-permission: name='com.slim.slimlauncher.permission.WRITE_SETTINGS'
uses-permission: name='com.huaqin.launcherEx.permission.WRITE_SETTINGS'
uses-permission: name='com.huaqin.launcherEx.permission.READ_SETTINGS'
uses-permission: name='com.epic.launcher.tw.permission.WRITE_SETTINGS'
uses-permission: name='com.epic.launcher.tw.permission.READ_SETTINGS'
uses-permission: name='com.android.lewalauncher.permission.READ_SETTINGS'
uses-permission: name='com.android.lewalauncher.permission.WRITE_SETTINGS'
uses-permission: name='com.Dean.launcher.permission.READ_SETTINGS'
uses-permission: name='com.Dean.launcher.permission.WRITE_SETTINGS'
uses-permission: name='app.cobo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='app.cobo.launcher.permission.READ_SETTINGS'
uses-permission: name='com.alphalp.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.alphalp.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lollipop.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lollipop.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.l.launcher.permission.READ_SETTINGS'
uses-permission: name='com.l.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.dlto.atom.launcher.permission.READ_SETTINGS'
uses-permission: name='com.dlto.atom.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.android.sprdlauncher2.permission.WRITE_SETTINGS'
uses-permission: name='com.android.sprdlauncher2.permission.READ_SETTINGS'
uses-permission: name='com.konka.launcher2.permission.READ_SETTINGS'
uses-permission: name='com.konka.launcher2.permission.WRITE_SETTINGS'
uses-permission: name='com.mycheering.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.mycheering.launcher.permission.READ_SETTINGS'
uses-permission: name='com.microsoft.launcher.permission.READ_SETTINGS'
uses-permission: name='com.microsoft.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.nicelauncher.lolauncher.permission.READ_SETTINGS'
uses-permission: name='com.nicelauncher.lolauncher.permission.WRITE_SETTINGS'
uses-permission: name='com.jui.launcher3.permission.READ_SETTINGS'
uses-permission: name='com.jui.launcher3.permission.WRITE_SETTINGS'
uses-permission: name='com.android.launcher2.permission.READ_SETTINGS'
uses-permission: name='com.android.launcher2.permission.WRITE_SETTINGS'
uses-permission: name='com.qihoo360.launcher.permission.READ_SETTINGS'
uses-permission: name='com.qihoo360.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.lge.launcher.permission.READ_SETTINGS'
uses-permission: name='com.lge.launcher.permission.WRITE_SETTINGS'
uses-permission: name='net.qihoo.launcher.permission.READ_SETTINGS'
uses-permission: name='net.qihoo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='org.adw.launcher_donut.permission.READ_SETTINGS'
uses-permission: name='org.adw.launcher_donut.permission.WRITE_SETTINGS'
uses-permission: name='com.huawei.launcher3.permission.READ_SETTINGS'
uses-permission: name='com.huawei.launcher3.permission.WRITE_SETTINGS'
uses-permission: name='com.sec.android.app.twlauncher.settings.READ_SETTINGS'
uses-permission: name='com.sec.android.app.twlauncher.settings.WRITE_SETTINGS'
uses-permission: name='com.anddoes.launcher.permission.READ_SETTINGS'
uses-permission: name='com.anddoes.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.tencent.qqlauncher.permission.READ_SETTINGS'
uses-permission: name='com.tencent.qqlauncher.permission.WRITE_SETTINGS'
uses-permission: name='com.huawei.launcher2.permission.READ_SETTINGS'
uses-permission: name='com.huawei.launcher2.permission.WRITE_SETTINGS'
uses-permission: name='com.ebproductions.android.launcher.permission.READ_SETTINGS'
uses-permission: name='com.ebproductions.android.launcher.permission.WRITE_SETTINGS'
uses-permission: name='telecom.mdesk.permission.READ_SETTINGS'
uses-permission: name='telecom.mdesk.permission.WRITE_SETTINGS'
uses-permission: name='dianxin.permission.ACCESS_LAUNCHER_DATA'
uses-permission: name='com.modaco.android.launchergb.permission.READ_SETTINGS'
uses-permission: name='com.modaco.android.launchergb.permission.WRITE_SETTINGS'
uses-permission: name='com.sec.android.app.launcher.permission.READ_SETTINGS'
uses-permission: name='com.sec.android.app.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.bbk.launcher2.permission.READ_SETTINGS'
uses-permission: name='com.bbk.launcher2.permission.WRITE_SETTINGS'
uses-permission: name='com.android.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.htc.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.sec.android.app.twlauncher.WRITE_SETTINGS'
uses-permission: name='com.sec.android.app.twlauncher.READ_SETTINGS'
uses-permission: name='org.adw.launcher.permission.READ_SETTINGS'
uses-permission: name='org.adw.launcher.permission.WRITE_SETTINGS'
uses-permission: name='org.adwfreak.launcher.permission.READ_SETTINGS'
uses-permission: name='org.adwfreak.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.gau.go.launcherex.permission.READ_SETTINGS'
uses-permission: name='com.gau.go.launcherex.permission.WRITE_SETTINGS'
uses-permission: name='com.fede.launcher.permission.READ_SETTINGS'
uses-permission: name='com.fede.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.oppo.launcher.permission.READ_SETTINGS'
uses-permission: name='com.oppo.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.nd.android.launcher.permission.READ_SETTINGS'
uses-permission: name='com.nd.android.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.android.mylauncher.permission.READ_SETTINGS'
uses-permission: name='com.android.mylauncher.permission.WRITE_SETTINGS'
uses-permission: name='com.huawei.android.launcher.permission.READ_SETTINGS'
uses-permission: name='com.huawei.android.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.huawei.launcher.permission.READ_SETTINGS'
uses-permission: name='com.huawei.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.mx.launcher.permission.READ_SETTINGS'
uses-permission: name='com.mx.launcher.permission.WRITE_SETTINGS'
uses-permission: name='com.android.launcher3.permission.READ_SETTINGS'
uses-permission: name='com.android.launcher3.permission.WRITE_SETTINGS'
uses-permission: name='com.google.android.launcher.permission.READ_SETTINGS'
uses-permission: name='com.google.android.launcher.permission.WRITE_SETTINGS'
uses-permission: name='android.permission.MOUNT_UNMOUNT_FILESYSTEMS'
uses-permission: name='android.permission.READ_EXTERNAL_STORAGE'

3. Github搜索技巧

搜索时星星数量越多越好
对应作者的其他项目的反馈情况有参考价值
看issues一栏里面已关闭和未关闭的问题
翻开库直接看源码查质量

4.AndroidStudio主题设置和字体设置

4.1、设置主题色

Darcula主题是背景色为黑色的主题
Default默认的主题是背景色为白色的主题
设置方法：Android Studio -- Preferences -- Appearance&Behavior -- Appearance -- UI Options --Theme

4.2、字体大小设置

Android Studio -- Preferences -- Editor -- ColorScheme -- ColorSchemeFont -- size

每次吃一点Androidの小知识

1. Service

1.1. `onStartCommand()`方法

1.2. Service永不被kill的方法

1.3. 相对强大的进程保活方案

1.4. 用户配置保活

2. AndroidManifest

2.1. Application节点说明

2.2. 创建桌面快捷方式适配不同机型

3. Github搜索技巧

4.AndroidStudio主题设置和字体设置

4.1、设置主题色

4.2、字体大小设置

猜你喜欢

热点阅读

每次吃一点Androidの小知识

1. Service

1.1. onStartCommand()方法

1.2. Service永不被kill的方法

1.3. 相对强大的进程保活方案

1.4. 用户配置保活

2. AndroidManifest

2.1. Application节点说明

2.2. 创建桌面快捷方式适配不同机型

3. Github搜索技巧

4.AndroidStudio主题设置和字体设置

4.1、设置主题色

4.2、字体大小设置

猜你喜欢

热点阅读

1.1. `onStartCommand()`方法