个人网站需不需要搭建服务器,蘑菇短视频2023版特色功能,面签拍照 网站备案,黎城网站建设Pavel Bobkov..5我在Samsung Galaxy Grand 2(Android 4)上遇到了同样的问题#xff0c;并且找到了一个解决方案。启动相机之前#xff0c;我禁用了自动对焦功能。1-2秒后#xff0c;我启用了它。我尝试了几种方法#xff0c;并决定定期切换自动对焦功能。为了实现这一点并且找到了一个解决方案。启动相机之前我禁用了自动对焦功能。1-2秒后我启用了它。我尝试了几种方法并决定定期切换自动对焦功能。为了实现这一点我创建了util类-FocusHandler。public class FocusHandler implements Runnable{private final int FOCUS_OFF_TIME 2000;private final int FOCUS_ON_TIME 20000;private boolean flag false;private boolean state false;private Handler handler;private WeakReference scannerView;public FocusHandler(Handler handler, ZXingScannerView scannerView){this.handler handler;this.flag false;this.scannerView new WeakReference(scannerView);}public void start(){state true;this.handler.post(this);}public void stop(){state false;scannerView.clear();}Overridepublic void run() {if (!state || this.scannerView.get() null){return;}int time;if (!flag){this.scannerView.get().setAutoFocus(flag);time FOCUS_OFF_TIME;}else{this.scannerView.get().setAutoFocus(flag);time FOCUS_ON_TIME;}flag !flag;handler.postDelayed(this, time);}}/ ***************活动****************** /private ZXingScannerView scannerView;private FocusHandler focusHandler;Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_scanner);scannerView new ZXingScannerView(this);focusHandler new FocusHandler(new Handler(), scannerView);frameLayout.addView(scannerView);}Overrideprotected void onResume() {super.onResume();scannerView.setResultHandler(this);scannerView.setAutoFocus(false);scannerView.startCamera();focusHandler.start();}Overridepublic void onPause() {super.onPause();scannerView.stopCamera();focusHandler.stop();}
