如何解决对于zxing-android-embedded
相关性引用:journeyapps/zxing-android-embedded
问题描述:
我是Android数据绑定的新手,无法绑定<merge> </merge>
这是我理解的代码。
activity_scan_qr.xml
<LinearLayout
android:id="@+id/ll_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_below="@+id/ll_header"
android:background="@color/color_white"
android:gravity="center"
android:orientation="vertical">
<com.journeyapps.barcodescanner.DecoratedBarcodeView
android:id="@+id/zxing_barcode_scanner"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_scanner_layout="@layout/view_custom_qr_scanner"/>
</LinearLayout>
view_custom_qr_scanner.xml
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<com.journeyapps.barcodescanner.BarcodeView
android:id="@+id/zxing_barcode_surface"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_framing_rect_height="250dp"
app:zxing_framing_rect_width="250dp" />
<com.journeyapps.barcodescanner.ViewfinderView
android:id="@+id/zxing_viewfinder_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_possible_result_points="@color/zxing_custom_possible_result_points"
app:zxing_result_view="@color/zxing_custom_result_view"
app:zxing_viewfinder_laser="@color/zxing_custom_viewfinder_laser"
app:zxing_viewfinder_laser_visibility="true"
app:zxing_viewfinder_mask="@color/zxing_custom_viewfinder_mask" />
<TextView
android:id="@+id/zxing_status_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:background="@color/zxing_transparent"
android:text="Place a QR code inside the scan area."
android:textColor="@color/zxing_status_text" />
</merge>
ScanQRActivity.java
public class ScanQRActivity extends AppCompatActivity implements DecoratedBarcodeView.TorchListener {
public static final String TAG = ScanQRActivity.class.getSimpleName();
Context mContext;
Activity mActivity;
ActivityScanQrBinding binding;
ActionBar actionBar;
private CaptureManager capture;
boolean bFlashLight = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityScanQrBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
mContext = this;
mActivity = this;
capture = new CaptureManager(this,binding.zxingBarcodeScanner);
capture.initializeFromIntent(getIntent(),savedInstanceState);
capture.setShowMissingCameraPermissionDialog(true);
capture.decode();
changeLaserVisibility(true);
}
public void changeLaserVisibility(boolean visible) {
binding.zxingViewfinderView.setLaserVisibility(visible);
}
}
解决方法
要使用数据绑定,您需要将布局放置在标记内。
您的activity.xml
<layout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/ll_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_below="@+id/ll_header"
android:background="@color/color_white"
android:gravity="center"
android:orientation="vertical">
<com.journeyapps.barcodescanner.DecoratedBarcodeView
android:id="@+id/zxing_barcode_scanner"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_scanner_layout="@layout/view_custom_qr_scanner"/>
</LinearLayout>
</layout>
您的view_custom_qr_scanner.xml文件应为
<layout>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<com.journeyapps.barcodescanner.BarcodeView
android:id="@+id/zxing_barcode_surface"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_framing_rect_height="250dp"
app:zxing_framing_rect_width="250dp" />
<com.journeyapps.barcodescanner.ViewfinderView
android:id="@+id/zxing_viewfinder_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:zxing_possible_result_points="@color/zxing_custom_possible_result_points"
app:zxing_result_view="@color/zxing_custom_result_view"
app:zxing_viewfinder_laser="@color/zxing_custom_viewfinder_laser"
app:zxing_viewfinder_laser_visibility="true"
app:zxing_viewfinder_mask="@color/zxing_custom_viewfinder_mask" />
<TextView
android:id="@+id/zxing_status_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:background="@color/zxing_transparent"
android:text="Place a QR code inside the scan area."
android:textColor="@color/zxing_status_text" />
</merge>
</layout>
,
在您的活动中,创建一个类型为'binding'的新变量,
私人ViewCustomQrScannerBinding bindingCustomScanner
,现在位于"binding = ActivityScanQrBinding.inflate (getLayoutInflater ());"
下的“ OnCreate”中
添加此行
bindingCustomScanner = ViewCustomQrScannerBinding.bind(binding.root)
现在,当您调用新视图的属性时,您将调用新的“ bindingCustomScanner”
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