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原创 android 中判断系统应用和第三方应用

方法一.获取全部应用：PackageManagerpackageManager=getPackageManager(); IntentmIntent=newIntent(Intent.ACTION_MAIN,null); mIntent.addCategory(Intent.CATEGORY_LAUNCHER); List<ResolveInfo>listAllApps=packageManager.queryInt...

原创 android shell 1.读取U盘 .开机安装U盘apk

if [ ! -e $SIG ]; thenecho "doing signature......" > /dev/kmsgfor i in $(seq 1 26)dosleep 1if [ -f /mnt/media_rw/*/config.txt ]; thenVAR=$(blkid -s UUID /dev/block/sda*)#echo $VARVAR1=${VAR#*\"}#echo $VAR1UUID=${VAR1%\"*}#echo $UUI

原创 amligic android 7.0 java中默认固定的HDMI缩放比例

1.import com.droidlogic.app.DisplayPositionManager;2.private DisplayPositionManager mDisplayPositionManager;3.oncreate()方法下mDisplayPositionManager = new DisplayPositionManager(this);4.缩放private void setdispalypercent() {if (isFristRun()) {mDi

原创 RK 3229 android 7.0系统修改DDR频率

kernel/arch/arm/boot/dts/rk322x.dtsidram: dram {compatible = "rockchip,rk322x-dram";status = "okay";dram_freq = <550000000>;//boot启动频率修改rockchip,dram_timing = <&dram_timing>;};kernel/arch/arm/boot/dts/rk322x-sdk.dtsifreq-tab

原创 RK android 7.0 系统中开机鼠标显示时间长短

目录：frameworks\base\libs\input\PointerController.cppdiff --git a/libs/input/PointerController.cpp b/libs/input/PointerController.cppindex 1152737..4270422 100644--- a/libs/input/PointerController.cpp+++ b/libs/input/PointerController.cpp@@ -39,8 +

原创 RK android 7.0系统修改系统分辨率

以下为720P修改为1080P例子：diff --git a/device/rockchip/rk322x/rk322x_box/system.prop b/device/rockchip/rk322x/rk322x_box/system.propindex 00395cd..9f4c2a2 100755--- a/device/rockchip/rk322x/rk322x_box/system.prop+++ b/device/rockchip/rk322x/rk322x_box/syst

原创 android 7.0 中java代码关闭系统相关提示音

AudioManager mAudioManager = (AudioManager) this.getSystemService(this.AUDIO_SERVICE);mAudioManager.unloadSoundEffects();Settings.System.putInt(this.getContentResolver(), Settings.System.SOUND_EFFECTS_ENABLED, 0);Settings.Global.putInt(this.getConten

原创 android sdk 版本号字段过长导致编译报错解决方案

diff --git a/tools/post_process_props.py b/tools/post_process_props.pyindex 2237707..df13699 100755--- a/tools/post_process_props.py+++ b/tools/post_process_props.py@@ -23,7 +23,7 @@ import sys# The constants in system_properties.h includes the .

原创 android 9.0默认打开网络定位

将目录此文件改为如下frameworks\base\packages\SettingsProvider\res\values\defaults.xml<string name="def_location_providers_allowed" translatable="false">gps,network</string>

原创 android 9.0 10.0系统中默认打开局域网adb

在系统初始化脚本中增加如下命令9.0默认打开网络adbsetprop persist.vendor.internet.adb.enable 110.0默认打开网络adbsetprop persist.internet_adb_enable 1

原创 android 9.0 默认打开开发者选项显示

在开机初始化脚本中增加如下命令settings put global development_settings_enabled 1

原创 RK android 9.0 控制HDMI 关闭打开节点

linux命令中输入下面命令echo on > /sys/class/drm/card0-HDMI-A-1/status //打开HDMIecho off > /sys/class/drm/card0-HDMI-A-1/status//关闭HDMI

原创 H3 android 7.0系统中，通过Launcher第一次启动修改屏幕缩放比例

import android.os.IDisplayOutputManager;import android.os.DisplayOutputManager;import android.os.ServiceManager;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;private DisplayOutputManager mDisplayOutput

原创 android sdk编译遇到java-server冲突问题。

linux命令下，cd回到用户根目录。命令 ：vi .jack-settings 修改如下字段SERVER_PORT_SERVICE=5050SERVER_PORT_ADMIN=6060命令 ：vi .jack-server/config.properties修改如下字段和.jack-settings字段保持相同jack.server.service.port=5050jack.server.admin.port=6060修改完成最好退出shell编译相关工具，然后进来...

原创 Tomcat 简单的生成一个图片或者视频的链接

1.创建testad文件夹，文件夹下面可随意放置图片，视频，文本。等文件2.docBase后面跟着testad文件的绝对路径，进入到testad,通过linux命令输入pwd获取该路径conf/server.xml中配置如下<Host name="localhost" appBase="webapps"unpackWARs="true" autoDeploy="true"><Context path="/testad" docBase="/work/Tomcat/apa

原创 android 系统中老是提示某个app无响应

在frameworks中去掉此提示对话框diff --git a/frameworks/base/services/core/java/com/android/server/am/AppErrorDialog.java b/frameworks/base/services/core/java/com/android/server/am/AppErrorDialog.javaold mode 100644new mode 100755index a80a5b5..437adfb--- a/fram

原创 android 系统屏蔽kernel打印

以android 7.0为例，其他系统版本可以找到相关文件。diff --git a/kernel/kernel/printk.c b/kernel/kernel/printk.cold mode 100644new mode 100755index 7874259..c12ba60--- a/kernel/kernel/printk.c+++ b/kernel/kernel/printk.c@@ -60,7 +60,7 @@ extern void printascii(char *);

原创 RK3328平台wifi搜索不到2.4G的12,13信道，以android 9.0为例

原创 android 系统中客户需求把不具有Launcehr的apk作为Launcher启动，简单的实现方式

1.做一个简单的Launcher，AndroidManifest.xml改为如下，就具备的Launcher启动属性 <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:largeHeap="true" android:theme="@...

原创 android 10.0系统默认允许未知来源。

diff --git a/frameworks/base/packages/PackageInstaller/src/com/android/packageinstaller/PackageInstallerActivity.java b/frameworkss/base/packages/packageinstaller/PackageInstallerActivity.javaold mode 100644new mode 100755index 55ff591..86560ac--- a/fr

原创 android 10.0 tv盒子中禁止google 商店后台自动升级

diff --git a/frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.java b/frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.jaold mode 100644new mode 100755index be7025b..4776822--- a/services/core/

原创 android tv 盒子2.4G语音-enter键，改为OK键

diff --git a/device/google/atv/Generic.kl b/Generic.klold mode 100644new mode 100755index e0115a3..16cce93--- a/Generic.kl+++ b/Generic.kl@@ -47,7 +47,7 @@ key 24 Okey 25 Pkey 26 LEFT_BRACKETkey 27 RIGHT_BRACKET-key 28 ENTER+ke...

原创 android TV盒子，2.4G-无线键盘-ESC-无作用

diff --git a device/google/atv/Generic.kl b/Generic.klold mode 100644new mode 100755index e0115a3..16cce93--- a/Generic.kl+++ b/Generic.kl@@ -47,7 +47,7 @@ key 24 O# a new key layout file with the required keyboard configuration.#-key 1 ES...

原创 android 系统中，国外反馈时间不同步问题。修改不同的时间服务器和同步时间。

diff --git a frameworks/core/res/res/values/config.xml b/core/res/res/values/config.xmlindex ac7df16..5c32bc6 100644--- a frameworks/core/res/res/values/config.xml+++ b frameworks/core/res/res/values/config.xml@@ -2024,11 +2024,11 @@ <bool name...

原创 android 9.0中系统默认强制横屏

diff --git a frameworks/base/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.javaindex 869bab7..fdd7c94 100644--- a frameworks/base/services/core/java/com/android/server/wm/DisplayCon

原创 android TV盒子中假关机，HDMI+AV输出下，遥控器POWER短按长按都是休眠,再按就是重启盒子。

diff --git a/frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java b/frameworks/base/services/core/java/com/androindex 8b2cda3..d323ce1 100755--- a/frameworks/base/services/core/java/com/android/server/policy/PhoneWindowMan

原创 RK3318_9.0修改DDR 频率 EMMC 频率

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsiold mode 100644new mode 100755index ab84e89..a1124aa--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi@@ -

原创 RK3566 系统11.0 修改 DDR频率

diff --git a/rkbin/RKBOOT/RK3566MINIALL.ini b/rkbin/RKBOOT/RK3566MINIALL.iniindex 041b3de..a4b30d3 100755--- a/rkbin/RKBOOT/RK3566MINIALL.ini+++ b/rkbin/RKBOOT/RK3566MINIALL.ini@@ -5,7 +5,7 @@ MAJOR=1MINOR=1[CODE471_OPTION]NUM=1-Path1=bin/r

原创 adb 命令截屏和录屏

adb截屏adb shell screencap -p /sdcard/1.pngadb 从android端pull到Liunx根目录（or pc）adb -s 192.168.1.72:5555 pull /storage/sdcard0/1.png ./adb录屏命令adbshellscreenrecord/sdcard/test.mp4...

原创 adb 命令获取和设置系统分辨率

adb获取系统分辨率大小adb shell wm size设置分辨率adb shell wm size 1920x1080adb shell dumpsys window displays

原创 android 7.1 底部栏不要隐藏后重启显示

diff --git a/frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java b/PhoneWindowManager.javaindex af0f528..80d926a 100755--- a/PhoneWindowManager.java+++ b/PhoneWindo...

原创 adb 批量安装PC根目录apk到android端

adb连接：adb connect ip连接后，执行执行以下命名会把根目录的apk覆盖安装到android 端for %i in (*.apk) do adb install -r %i

原创 android 8.1 版本号过长 引起编译失败解决

8.1，版本号过长diff --git a/tools/post_process_props.py b/tools/post_process_props.pyindex 2237707..df13699 100755--- a/tools/post_process_props.py+++ b/tools/post_process_props.py@@ -23,7 +23,7 @...

原创 android shell脚本 获取一个命令的执行结果，并判断是否为1

环境变量：persist.sys.power_keymark1=$(getprop persist.sys.power_key)if [ $mark1 -eq 1 ];thenecho $mark1 "=======================if" > /dev/kmsgelseecho $mark1 "==========================...