1、蓝牙界面
com/android/settings/bluetooth/BluetoothSettings.java
来看打开做了什么

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com/android/settings/bluetooth/BluetoothEnabler.java

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mSwitchBar.addOnSwitchChangeListener(this);

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这个就是开关流程

2、来看下配对连接流程
com/android/settings/bluetooth/BluetoothSettings.java

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com/android/settings/bluetooth/DeviceListPreferenceFragment.java

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com/android/settings/bluetooth/BluetoothDevicePreference.java

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来看配对

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android/bluetooth/BluetoothDevice.java

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alps/packages/apps/Bluetooth/src/com/android/bluetooth/btservice/BondStateMachine.java

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private static IBluetooth sService;
extends IBluetooth.Stub
com/android/bluetooth/btservice/AdapterService.java

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com/android/bluetooth/btservice/AdapterService.java

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