近來寫android設(shè)備的時(shí)候，有一個(gè)需要設(shè)備的經(jīng)典藍(lán)牙模塊持續(xù)被搜索到的需求，再次記錄下。

下面方法是可以實(shí)現(xiàn)的，但是時(shí)長(zhǎng)只有120s，再安卓9.0以下會(huì)彈出一個(gè)彈出框。

Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
startActivityForResult(intent, 0);
Toast.makeText(PortLoginAct.this, "藍(lán)牙可檢測(cè)性已打開", Toast.LENGTH_SHORT).show();

為了設(shè)置永久可見性，并且取消彈窗，可調(diào)用下面方法

/**
     * 開啟藍(lán)牙永久可見性
     */
    public static void setDiscoverableTimeout() {
        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
        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, 0);
            setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE, 0);
            L.e("open Bluetooth search");
        } catch (Exception e) {
            e.printStackTrace();
            L.e("setDiscoverableTimeout failure:" + e.getMessage());
        }
    }



  /**
     * 關(guān)閉藍(lán)牙永久可見性
     */
    public static void closeDiscoverableTimeout() {
        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
        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);
            L.e("close Bluetooth search");
        } catch (Exception e) {
            e.printStackTrace();
            L.e("closeDiscoverableTimeout failure:" + e.getMessage());
        }
    }

轉(zhuǎn)載http://www.itdecent.cn/p/962ac40d7c9c，感謝前輩的指點(diǎn)。