Android 笔记

编码显示Android firmware version 之类的信息

import android.os.Build;
import android.os.Build.VERSION_CODES;

TextView.setText(Build.VERSION.SDK);//SDK版本号 
TextView.setText(Build.VERSION.RELEASE);//Firmware/OS 版本号}

RK 方案

关机动画名字为shutdownanimation.zip，制作动画方式跟开机动画一样；

增加属性

<integer name="config_shutdownAnimationDuration">1</integer>

添加到android\device\softwinner\tulip-p3\overlay\frameworks\base\core\res\res\values\config.xml 在文件android\device\softwinner\tulip-p3\tulip_p3.mk添加

# shutdownanimation

PRODUCT_COPY_FILES += \

 device/softwinner/tulip-p3/media/shutdownanimation.zip:system/media/shutdownanimation.zip

apk 签名

java -jar out/host/linux-x86/framework/signapk.jar build/target/product/security/platform.x509.pem build/target/product/security/platform.pk8 待签名.apk 签名后.apk

左右声道

--- a/sound/soc/codecs/rk3026_codec.c
++ b/sound/soc/codecs/rk3026_codec.c
-1433,7 +1433,7 static int rk3026_set_dai_fmt(struct snd_soc_dai *codec_dai,
snd_soc_update_bits(codec, RK3026_ADC_INT_CTL2,RK3026_ABCLK_POL_MASK | RK3026_I2S_MODE_MASK, adc_aif2);
snd_soc_update_bits(codec, RK3026_DAC_INT_CTL1,- RK3026_DLRCK_POL_MASK | RK3026_DAC_DF_MASK, dac_aif1);
RK3026_DLRCK_POL_MASK | RK3026_DAC_DF_MASK, dac_aif1 | RK3026_DLRCK_POL_EN);
snd_soc_update_bits(codec, RK3026_DAC_INT_CTL2,RK3026_DBCLK_POL_MASK, dac_aif2);

关闭setting中screenshot 项

//if(!SystemProperties.get("ro.build.characteristics","null").equals("tablet")) {
       setTileEnabled(new ComponentName(packageName,
                   Settings.ScreenshotSettingsActivity.class.getName()),
                   false, isAdmin, pm);
//  }

关机LOGO 播放LOOP(1)问题

diff --git a/services/core/java/com/android/server/power/ShutdownThread.java b/services/core/java/com/android/server/power/ShutdownThread.java
index 6db8461..de53dbe 100755
--- a/services/core/java/com/android/server/power/ShutdownThread.java
+++ b/services/core/java/com/android/server/power/ShutdownThread.java
@ -797,9 +797,15 @ public final class ShutdownThread extends Thread {

//Wait until the animation loop finished
     private static void wait_shutdownanim_end() {
+        int count = 0;
         while(!SystemProperties.get(LOOP_COMPLETED_PROP_NAME, "false").equals("true")) {
             try {
                 Thread.sleep(200);
+                count++;
+                if(count > 10){
+                    Log.e(TAG, "add by huangkaihui");
+                    SystemProperties.set("service.bootanim.exit", "1");
             break;
+                }
             } catch (Exception e) {
             }
         }

allwinner 方案

pack4dist -v,要求输入4次1  全志加密固件

Settings 删除顶层item 蓝牙 eth

AndroidManifest.xml
<!--
<meta-data android:name="com.android.settings.category"
android:value="com.android.settings.category.wireless" />
<meta-data android:name="com.android.settings.FRAGMENT_CLASS"
android:value="com.android.settings.bluetooth.BluetoothSettings" />
-->
<!--
    <meta-data android:name="com.android.settings.category"
    android:value="com.android.settings.category.wireless" />
    <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
    android:value="com.android.settings.ethernet.EthernetSettings" />
-->
Settings/src/com/android/settings/SettingsActivity.java
//setTileEnabled(new ComponentName(packageName,
//          Settings.EthernetSettingsActivity.class.getName()),
//               pm.hasSystemFeature(PackageManager.FEATURE_ETHERNET), isAdmin, pm);
//setTileEnabled(new ComponentName(packageName,
//        Settings.BluetoothSettingsActivity.class.getName()),
//        pm.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH), isAdmin, pm);