E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.debugshow, PID: 3438
java.lang.RuntimeException: Unable to start service com.example.debugshow.view.Main.FloatingService@ed88d6d with Intent { cmp=com.example.debugshow/.view.Main.FloatingService (has extras) }: android.view.InflateException: Binary XML file line #22: Binary XML file line #22: Error inflating class com.example.debugshow.view.Main.DraggableFloatingButton
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3097)
at android.app.ActivityThread.access$2300(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5653)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
Caused by: android.view.InflateException: Binary XML file line #22: Binary XML file line #22: Error inflating class com.example.debugshow.view.Main.DraggableFloatingButton
at android.view.LayoutInflater.inflate(LayoutInflater.java:543)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.view.View.inflate(View.java:19830)
at com.example.debugshow.view.Main.FloatingDebugView.initView(FloatingDebugView.java:37)
at com.example.debugshow.view.Main.FloatingDebugView.<init>(FloatingDebugView.java:31)
at com.example.debugshow.view.Main.FloatingDebugWindowManager.addView(FloatingDebugWindowManager.java:52)
at com.example.debugshow.view.Main.FloatingService.onStartCommand(FloatingService.java:41)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3077)
at android.app.ActivityThread.access$2300(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5653)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
Caused by: android.view.InflateException: Binary XML file line #22: Error inflating class com.example.debugshow.view.Main.DraggableFloatingButton
at android.view.LayoutInflater.createView(LayoutInflater.java:649)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:768)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:708)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:839)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:842)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.inflate(LayoutInflater.java:519)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.view.View.inflate(View.java:19830)
at com.example.debugshow.view.Main.FloatingDebugView.initView(FloatingDebugView.java:37)
at com.example.debugshow.view.Main.FloatingDebugView.<init>(FloatingDebugView.java:31)
at com.example.debugshow.view.Main.FloatingDebugWindowManager.addView(FloatingDebugWindowManager.java:52)
at com.example.debugshow.view.Main.FloatingService.onStartCommand(FloatingService.java:41)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3077)
at android.app.ActivityThread.access$2300(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5653)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java:623)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:768)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:708)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:839)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:842)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.inflate(LayoutInflater.java:519)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.view.View.inflate(View.java:19830)
at com.example.debugshow.view.Main.FloatingDebugView.initView(FloatingDebugView.java:37)
at com.example.debugshow.view.Main.FloatingDebugView.<init>(FloatingDebugView.java:31)
at com.example.debugshow.view.Main.FloatingDebugWindowManager.addView(FloatingDebugWindowManager.java:52)
at com.example.debugshow.view.Main.FloatingService.onStartCommand(FloatingService.java:41)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3077)
at android.app.ActivityThread.access$2300(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5653)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).
at android.support.design.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:221)
at android.support.design.internal.ThemeEnforcement.checkAppCompatTheme(ThemeEnforcement.java:196)
at android.support.design.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:131)
at android.support.design.internal.ThemeEnforcement.obtainStyledAttributes(ThemeEnforcement.java:72)
at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.java:195)
at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.java:188)
at com.example.debugshow.view.Main.DraggableFloatingButton.<init>(DraggableFloatingButton.java:24)
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java:623)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:768)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:708)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:839)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:842)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
at android.view.LayoutInflater.inflate(LayoutInflater.java:519)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.view.View.inflate(View.java:19830)
at com.example.debugshow.view.Main.FloatingDebugView.initView(FloatingDebugView.java:37)
at com.example.debugshow.view.Main.FloatingDebugView.<init>(FloatingDebugView.java:31)
at com.example.debugshow.view.Main.FloatingDebugWindowManager.addView(FloatingDebugWindowManager.java:52)
at com.example.debugshow.view.Main.FloatingService.onStartCommand(FloatingService.java:41)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3077)
at android.app.ActivityThread.access$2300(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5653)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
I/Process: Sending signal. PID: 3438 SIG: 9
Disconnected from the target VM, address: 'localhost:8600', transport: 'socket'
網上不少說法是出這個錯的緣由是自定義View的構造函數沒寫全，可是我把三個構造函數寫全了，依然報這個錯。其實真正的解法是，在引用這個自定義佈局的界面根標籤裏，添加一行代碼：java
android:theme="@style/Theme.AppCompat"