android nordic OTA 升级

根据NORDIC官方Android-DFU-Library实现，具体步骤如下：

1、build.gradle配置

implementation 'no.nordicsemi.android:dfu:1.9.0'

2、AndroidMainfest.xml中申请BLE的相关权限、读写权限、定位等。

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

3、创建DfuService，实现 getNotificationTarget() 方法，在进行DFU时，该方法会返回一个活动类，

　　该活动通过Intent ,FLAG_ACTIVITY_NEW_TASK标志开启，下面步骤是定义的具体活动类。

public class DfuService extends DfuBaseService {
 
 
    public DfuService() {
    }
 
    @Nullable
    @Override
    protected Class<? extends Activity> getNotificationTarget() {
        /*
         * As a target activity the NotificationActivity is returned, not the MainActivity. This is because
         * the notification must create a new task:
         *
         * intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         *
         * when you press it. You can use NotificationActivity to check whether the new activity
         * is a root activity (that means no other activity was open earlier) or that some
         * other activity is already open. In the latter case the NotificationActivity will just be
         * closed. The system will restore the previous activity. However, if the application has been
         * closed during upload and you click the notification, a NotificationActivity will
         * be launched as a root activity. It will create and start the main activity and
         * terminate itself.
         *
         * This method may be used to restore the target activity in case the application
         * was closed or is open. It may also be used to recreate an activity history using
         * startActivities(...).
         */
        return NotificationActivity.class;
    }
 
    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }
}

　　4、创建NotificationActivity类，继承自Activity，该类主要用于组织APP的其他实例启动。

public class NotificationActivity extends Activity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        // If this activity is the root activity of the task, the app is not running
        if (isTaskRoot()) {
            // Start the app before finishing
            final Intent intent = new Intent(this, MineDfuActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.putExtras(getIntent().getExtras()); // copy all extras
            startActivity(intent);
        }
 
        // Now finish, which will drop you to the activity at which you were at the top of the task stack
        finish();
 
 
    }
}

5、开启DFU服务

final DfuServiceInitiator starter = new DfuServiceInitiator(MineDeviceActivity.bleDevice.getMac())
                                    .setDeviceName(MineDeviceActivity.bleDevice.getName());
                            // If you want to have experimental buttonless DFU feature supported call additionally:starter.setUnsafeExperimentalButtonlessServiceInSecureDfuEnabled(true);
                            String fileName = urlDfuPackage.substring(urlDfuPackage.lastIndexOf("/"));
                            String directory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getPath();
 
                            starter.setZip(directory + fileName);
                            final DfuServiceController controller = starter.start(MyApplication.getContext(), DfuService.class);
 
//以下是NORDIC DEMO分文件包的格式进行不同处理，我的直接是在固定存储路径下压缩包文件，所以就按照以上写了，以下供参考
// Init packet is required by Bootloader/DFU from SDK 7.0+ if HEX or BIN file is given above.
// In case of a ZIP file, the init packet (a DAT file) must be included inside the ZIP file.
if (mFileType == DfuService.TYPE_AUTO)
    starter.setZip(mFileStreamUri, mFilePath);
else {
    starter.setBinOrHex(mFileType, mFileStreamUri, mFilePath).setInitFile(mInitFileStreamUri, mInitFilePath);
}
final DfuServiceController controller = starter.start(this, DfuService.class);
// You may use the controller to pause, resume or abort the DFU process.

6、以上步骤完成了DFU过程，但是我们拿单板和APP测试也看不到DFU的过程，所以还需要创建DFU进度监听器，可以掌握DFU的动态情况，比如可以在界面显示DFU进度等。

//DFU进度监听器
    private final DfuProgressListener mDfuProgressListener = new DfuProgressListenerAdapter(){
 
        @Override
        public void onDeviceConnecting(final String deviceAddress) {
            relativeDfuProgress.setVisibility(View.VISIBLE);
 
        }
 
        @Override
        public void onDfuProcessStarting(final String deviceAddress) {
            relativeDfuProgress.setVisibility(View.VISIBLE);
        }
 
        @Override
        public void onEnablingDfuMode(final String deviceAddress) {
            relativeDfuProgress.setVisibility(View.VISIBLE);
 
        }
 
        @Override
        public void onFirmwareValidating(final String deviceAddress) {
            relativeDfuProgress.setVisibility(View.VISIBLE);
 
        }
 
        @Override
        public void onDeviceDisconnecting(final String deviceAddress) {
            relativeDfuProgress.setVisibility(View.VISIBLE);
 
        }
 
        @Override
        public void onDfuCompleted(final String deviceAddress) {
            Toast.makeText(MineDfuActivity.this,"固件升级成功",Toast.LENGTH_SHORT).show();
            // let's wait a bit until we cancel the notification. When canceled immediately it will be recreated by service again.
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
//                    onTransferCompleted();
 
                    // if this activity is still open and upload process was completed, cancel the notification
                    final NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                    manager.cancel(DfuService.NOTIFICATION_ID);
                }
            }, 200);
        }
 
        @Override
        public void onDfuAborted(final String deviceAddress) {
            // let's wait a bit until we cancel the notification. When canceled immediately it will be recreated by service again.
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
//                    onUploadCanceled();
 
                    // if this activity is still open and upload process was completed, cancel the notification
                    final NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                    manager.cancel(DfuService.NOTIFICATION_ID);
                }
            }, 200);
        }
 
        @Override
        public void onProgressChanged(final String deviceAddress, final int percent, final float speed, final float avgSpeed, final int currentPart, final int partsTotal) {
 
            int temp = (percent * 360)/100;
            circleDfuProgress.update(temp,"");
 
//            if (partsTotal > 1)
//                mTextUploading.setText(getString(R.string.dfu_status_uploading_part, currentPart, partsTotal));
//            else
//                mTextUploading.setText(R.string.dfu_status_uploading);
        }
 
        @Override
        public void onError(final String deviceAddress, final int error, final int errorType, final String message) {
//            showErrorMessage(message);
 
            // We have to wait a bit before canceling notification. This is called before DfuService creates the last notification.
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    // if this activity is still open and upload process was completed, cancel the notification
                    final NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                    manager.cancel(DfuService.NOTIFICATION_ID);
                }
            }, 200);
        }
    };

7、在当前活动中重写onResume及onPause方法，分别进行监听器的注册和取消注册。

 @Override
    protected void onResume() {
        super.onResume();
        DfuServiceListenerHelper.registerProgressListener(this, mDfuProgressListener);
 
    }
 
    @Override
    protected void onPause() {
        super.onPause();
        DfuServiceListenerHelper.unregisterProgressListener(this, mDfuProgressListener);
 
    }

【参考】

https://github.com/NordicSemiconductor/Android-DFU-Library/tree/release/documentation