[toc]
魔改安卓笔记
替换默认壁纸
frameworks/base/core/res/res/下搜索default_wallpaper.jpg
把找到的文件替换掉
添加新的property字段
property_contexts文件中加：
persist.xxx. u:object_r:system_prop:s0
去掉通知
frameworks/base/core/java/android/app/NotificationManager.java
注释掉notify方法
霸屏
startActivity把应用调到前台展示，并屏蔽返回和退出事件.
frameworks/base/core/java/com/android/internal/policy/DecorView.java
设置persist.sys.iot.guardPkgName=要屏蔽的应用包名
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
...
if (!mWindow.isDestroyed()) {
//以下添加霸屏功能
String guardAppPkgName = SystemProperties.get("persist.sys.iot.guardPkgName", "");
PackageInfo pi = null;
if (!TextUtils.isEmpty(guardAppPkgName)){
try {
pi = getContext().getPackageManager().getPackageInfo(guardAppPkgName, PackageManager.GET_CONFIGURATIONS);
} catch (PackageManager.NameNotFoundException e) {
// It's ok
}
}
switch (event.getKeyCode()) {
case KeyEvent.KEYCODE_ESCAPE:
case KeyEvent.KEYCODE_BACK:
if (pi != null) {
return false;
}
}
//结束
...
}
...
}
退出霸屏的时候把persist.sys.iot.guardPkgName设置为“”即可
去掉状态栏和导航栏
- frameworks/base/core/res/res/values/dimens.xml
把status_bar_height，navigation_bar_height， navigation_bar_height_landscape， navigation_bar_width都改成0
注释掉创建状态栏和导航栏的方法
packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
diff --git a/src/com/android/systemui/statusbar/phone/StatusBar.java b/src/com/android/systemui/statusbar/phone/StatusBar.java
index 3e55bf3..7c9c237 100644
--- a/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -1352,6 +1352,7 @@ public class StatusBar extends SystemUI implements DemoMode,
}
protected void createNavigationBar() {
+/*
mNavigationBarView = NavigationBarFragment.create(mContext, (tag, fragment) -> {
mNavigationBar = (NavigationBarFragment) fragment;
if (mLightBarController != null) {
@@ -1359,6 +1360,7 @@ public class StatusBar extends SystemUI implements DemoMode,
}
mNavigationBar.setCurrentSysuiVisibility(mSystemUiVisibility);
});
+*/
}
/**
@@ -7888,6 +7890,7 @@ public class StatusBar extends SystemUI implements DemoMode,
}
/// M: Support "Operator plugin - Customize Carrier Label for PLMN". @}
public void displayNavigationbar() {
+/*
if (mNavigationBarView == null) {
mNavigationBarView = NavigationBarFragment.create(mContext, (tag, fragment) -> {
mNavigationBar = (NavigationBarFragment) fragment;
@@ -7898,6 +7901,7 @@ public class StatusBar extends SystemUI implements DemoMode,
});
}
+*/
}
public void hideNavigationbar() {
虚拟按键
由于上面把导航栏高度改为0了，这里实现可以从屏幕边缘划出来的虚拟按键。
- 设置划动阈值
frameworks/base/services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java
diff --git a/services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java b/services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java
index 598c58e..58ddb74 100644
--- a/services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java
+++ b/services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java
@@ -68,8 +68,9 @@ public class SystemGesturesPointerEventListener implements PointerEventListener
public SystemGesturesPointerEventListener(Context context, Callbacks callbacks) {
mContext = context;
mCallbacks = checkNull("callbacks", callbacks);
- mSwipeStartThreshold = checkNull("context", context).getResources()
- .getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
+// mSwipeStartThreshold = checkNull("context", context).getResources()
+// .getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
+ mSwipeStartThreshold = 60;
mSwipeDistanceThreshold = mSwipeStartThreshold;
if (DEBUG) Slog.d(TAG, "mSwipeStartThreshold=" + mSwipeStartThreshold
+ " mSwipeDistanceThreshold=" + mSwipeDistanceThreshold);
- 检测到划动发送广播
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/Ph
oneWindowManager.java
index 4631ab0..27a4c4e 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -2069,24 +2069,32 @@ public class PhoneWindowManager implements WindowManagerPolicy {
new SystemGesturesPointerEventListener.Callbacks() {
@Override
public void onSwipeFromTop() {
+ Log.i(TAG, "onSwipeFromTop");
+ context.sendBroadcast(new Intent("com.virtualKey.onSwipeFromTop"));
if (mStatusBar != null) {
requestTransientBars(mStatusBar);
}
}
@Override
public void onSwipeFromBottom() {
+ Log.i(TAG, "onSwipeFromBottom");
+ context.sendBroadcast(new Intent("com.virtualKey.onSwipeFromBottom"));
if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_BOTTOM) {
requestTransientBars(mNavigationBar);
}
}
@Override
public void onSwipeFromRight() {
+ Log.i(TAG, "onSwipeFromRight");
+ context.sendBroadcast(new Intent("com.virtualKey.onSwipeFromRight"));
if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_RIGHT) {
requestTransientBars(mNavigationBar);
}
}
@Override
public void onSwipeFromLeft() {
+ Log.i(TAG, "onSwipeFromLeft");
+ context.sendBroadcast(new Intent("com.virtualKey.onSwipeFromLeft"));
if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_LEFT) {
requestTransientBars(mNavigationBar);
}
虚拟按键的apk放到/system下，接收BOOT_COMPLETED广播时启动service, 并在manifest中设置android:persistent="true"，这样可以保证service在开机自启动并且被kill后会重新启动；
接收到上面发送的com.virtualKey.onSwipeFromLeft等广播之后在windowmanager中add对应的view
虚拟按键中的home按键的实现：
private void goToHome(Context context) { sendEventImpl(context, KeyEvent.ACTION_DOWN); new Handler(Looper.getMainLooper()).postDelayed(() -> sendEventImpl(context, KeyEvent.ACTION_UP), 100); } private void sendEventImpl(Context context, int action) { final int repeatCount = 0; final KeyEvent ev = new KeyEvent(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), action, KeyEvent.KEYCODE_HOME, repeatCount, 0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY, InputDevice.SOURCE_KEYBOARD); InputManager im = (InputManager) context.getSystemService(Context.INPUT_SERVICE); FrameworkCompat.InputManager_injectInputEvent(im, ev, FrameworkCompat.InputManager_INJECT_INPUT_EVENT_MODE_ASYNC); }recentapps按键的实现：
Shell.run("input keyevent KEYCODE_APP_SWITCH");
默认开启wifi
frameworks/base/service/java/com/android/server/wifi/WifiServiceImpl.java
public void checkAndStartWifi() {
...
wifiEnabled = true;
if (wifiEnabled) {
try {
setWifiEnabled(mContext.getPackageName(), wifiEnabled);
} catch (RemoteException e) {
/* ignore - local call */
}
}
...
}
关闭selinux
system/core/init/init.cpp把selinux_is_enforcing函数返回改成false
diff --git a/init/init.cpp b/init/init.cpp
index f65bfe0..f53b96c 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -571,7 +571,7 @@ static void selinux_init_all_handles(void)
}
enum selinux_enforcing_status { SELINUX_PERMISSIVE, SELINUX_ENFORCING };
-
+/*
static selinux_enforcing_status selinux_status_from_cmdline() {
selinux_enforcing_status status = SELINUX_ENFORCING;
@@ -583,13 +583,16 @@ static selinux_enforcing_status selinux_status_from_cmdline() {
return status;
}
-
+*/
static bool selinux_is_enforcing(void)
{
+ return false;
+/*
if (ALLOW_PERMISSIVE_SELINUX) {
return selinux_status_from_cmdline() == SELINUX_ENFORCING;
}
return true;
+*/
}
static int audit_callback(void *data, security_class_t /*cls*/, char *buf, size_t len) {
修改su的执行权限
system/core/libcutils/fs_config.cpp
diff --git a/libcutils/fs_config.cpp b/libcutils/fs_config.cpp
index 372dd58..ab9e3cd 100644
--- a/libcutils/fs_config.cpp
+++ b/libcutils/fs_config.cpp
@@ -166,7 +166,7 @@ static const struct fs_path_config android_files[] = {
// the following two files are INTENTIONALLY set-uid, but they
// are NOT included on user builds.
{ 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procmem" },
- { 04750, AID_ROOT, AID_SHELL, 0, "system/xbin/su" },
+ { 06755, AID_ROOT, AID_SHELL, 0, "system/xbin/su" },
// the following files have enhanced capabilities and ARE included
// in user builds.
去掉bootanimation结束后的动画“Android正在启动...”
Settings：
res/layout/fallback_home_finishing_boot.xml
diff --git a/res/layout/fallback_home_finishing_boot.xml b/res/layout/fallback_home_finishing_boot.xml
index 2714409..8ab620b 100644
--- a/res/layout/fallback_home_finishing_boot.xml
+++ b/res/layout/fallback_home_finishing_boot.xml
@@ -34,7 +34,7 @@
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
- android:textColor="?android:attr/textColorPrimary"
+ android:textColor="@android:color/black"
android:text="@*android:string/android_start_title"/>
<ProgressBar
@@ -43,7 +43,8 @@
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="12.75dp"
- android:indeterminate="true"/>
+ android:indeterminate="true"
+ android:visibility="gone"/>
</LinearLayout>
</FrameLayout>
去掉音量提示弹窗
packages/apps/SystemUI/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
diff --git a/src/com/android/systemui/volume/VolumeDialogControllerImpl.java b/src/com/android/systemui/volume/VolumeDialogControll
erImpl.java
index b08b26d..c74c560 100644
--- a/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
+++ b/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
@@ -96,7 +96,7 @@ public class VolumeDialogControllerImpl implements VolumeDialogController, Dumpa
protected StatusBar mStatusBar;
private final NotificationManager mNoMan;
private final SettingObserver mObserver;
- private final Receiver mReceiver = new Receiver();
+// private final Receiver mReceiver = new Receiver();
private final MediaSessions mMediaSessions;
protected C mCallbacks = new C();
private final State mState = new State();
@@ -125,7 +125,7 @@ public class VolumeDialogControllerImpl implements VolumeDialogController, Dumpa
mNoMan = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
mObserver = new SettingObserver(mWorker);
mObserver.init();
- mReceiver.init();
+// mReceiver.init();
mVibrator = (Vibrator) mContext.getSystemService(Context.VIBRATOR_SERVICE);
mHasVibrator = mVibrator != null && mVibrator.hasVibrator();
updateStatusBar();
@@ -203,7 +203,7 @@ public class VolumeDialogControllerImpl implements VolumeDialogController, Dumpa
Events.writeEvent(mContext, Events.EVENT_COLLECTION_STOPPED);
mMediaSessions.destroy();
mObserver.destroy();
- mReceiver.destroy();
+// mReceiver.destroy();
mWorkerThread.quitSafely();
}
@@ -569,10 +569,12 @@ public class VolumeDialogControllerImpl implements VolumeDialogController, Dumpa
@Override
public void volumeChanged(int streamType, int flags) throws RemoteException {
+/*
if (D.BUG) Log.d(TAG, "volumeChanged " + AudioSystem.streamToString(streamType)
+ " " + Util.audioManagerFlagsToString(flags));
if (mDestroyed) return;
mWorker.obtainMessage(W.VOLUME_CHANGED, streamType, flags).sendToTarget();
+*/
}
@Override