安卓蓝牙通过代码显示蓝牙可见时间设置

来源：互联网发布：sql 修改字段为自增列编辑：程序博客网时间：2024/05/17 22:37

//会弹出一个确认框提醒用户

Intent discoverableIntent = newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);startActivity(discoverableIntent);

//没有界面的调用

public void setDiscoverableTimeout(){    ClsUtils.setDiscoverableTimeout(adapter,0);//这里设置时间无效,只能通过延迟close    LogUtil.e("setDiscoverableTimeout");    new Handler().postDelayed(new Runnable() {        @Override        public void run() {            closeDiscoverableTimeout();            LogUtil.e("closeDiscoverableTimeout");        }    }, 10000);//毫秒单位}

private void closeDiscoverableTimeout(){    closeDiscoverableTimeout(adapter);}
public void setDiscoverableTimeout(BluetoothAdapter adapter,int timeout) {    try {        Method setDiscoverableTimeout = BluetoothAdapter.class.getMethod("setDiscoverableTimeout", int.class);        setDiscoverableTimeout.setAccessible(true);        Method setScanMode =BluetoothAdapter.class.getMethod("setScanMode", int.class,int.class);        setScanMode.setAccessible(true);        setDiscoverableTimeout.invoke(adapter, timeout);        setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE,timeout);    } catch (Exception e) {        e.printStackTrace();    }}
public void closeDiscoverableTimeout(BluetoothAdapter adapter) {    try {        Method setDiscoverableTimeout = BluetoothAdapter.class.getMethod("setDiscoverableTimeout", int.class);        setDiscoverableTimeout.setAccessible(true);        Method setScanMode =BluetoothAdapter.class.getMethod("setScanMode", int.class,int.class);        setScanMode.setAccessible(true);        setDiscoverableTimeout.invoke(adapter, 1);        setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE,1);    } catch (Exception e) {        e.printStackTrace();    }}

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