状态栏全透明步骤：
1，反编译SystemUI.apk
2，SystemUI\res\layout\navigation_bar.xml
找到<com.android.systemui.statusbar.phone.NavigationBarView
将后面的
android:background="#FF000000"改为android:background="#00000000"
3，SystemUI\res\layout\status_bar.xml
找到<com.android.systemui.statusbar.phone.PhoneStatusBarView
将后面的code>android:background="@drawable/status_bar_background"
改为android:background="#00000000"
4，SystemUI\Data\res\values\drawables.xml
找到<item type="drawable" name="status_bar_background">#ff000000</item>
改为<item type="drawable" name="status_bar_background">#00000000</item>
5，反编译android.policy.jar
6，android.policy.jar.out\smali\com\android\internal\policy\impl\PhoneWindowManager.smali
找到.method public getSystemDecorRectLw(Landroid/graphics/Rect;)I
以及这一段结尾的
.end method
把这一段替换为
.method public getSystemDecorRectLw(Landroid/graphics/Rect;)I
.locals 1
.parameter "systemRect"
.prologue
.line 3208
iget v0, p0, Lcom/android/internal/policy/impl/PhoneWindowManager;->mSystemLeft:I
iput v0, p1, Landroid/graphics/Rect;->left:I
.line 3209
iget v0, p0, Lcom/android/internal/policy/impl/PhoneWindowManager;->mSystemTop:I
iput v0, p1, Landroid/graphics/Rect;->top:I
.line 3210
iget v0, p0, Lcom/android/internal/policy/impl/PhoneWindowManager;->mSystemRight:I
iput v0, p1, Landroid/graphics/Rect;->right:I
.line 3211
iget v0, p0, Lcom/android/internal/policy/impl/PhoneWindowManager;->mSystemBottom:I
iput v0, p1, Landroid/graphics/Rect;->bottom:I
.line 3212
const/4 v0, 0x0
return v0
.end method
锁屏全透明步骤：
1，反编译android.policy.jar
android.policy\Data\smali\com\android\internal\policy\impl\keyguard\KeyguardViewBase.smali
将.field private static final BACKGROUND_COLOR:I = 0x70000000
改为.field private static final BACKGROUND_COLOR:I = 0x00000000
2，android.policy\Data\smali\com\android\internal\policy\impl\keyguard\KeyguardViewBase$1.smali
将const/high16 v0, 0x7000
改为const/high16 v0, 0x0000