Android_二维码

来源：互联网发布：动态加载js文件编辑：程序博客网时间：2024/06/08 17:05

//权限

<!--相机权限--><uses-permission android:name="android.permission.CAMERA"/><!-- 震动权限 --><uses-permission android:name="android.permission.VIBRATE"/><!--网络权限--><uses-permission android:name="android.permission.INTERNET"/>
//依赖   compile 'cn.yipianfengye.android:zxing-library:2.2'
public class MainActivity extends AppCompatActivity {    //定义处理返回的code    private static final int REQEUST_CODE = 111;    private static final int REQUEST_IMAGE = 112;    private ImageView ivIcon;    private ImageView imageView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ZXingLibrary.initDisplayOpinion(this);    }    /**     * 打开默认二维码扫描界面     */    //扫描二维码    public void saomiao(View view){        Intent intent = new Intent(this, CaptureActivity.class);        //startActivity(intent);        startActivityForResult(intent,REQEUST_CODE);    }    //扫描图库二维码    public void tuku(View view){        //跳转手机相册的隐式意图        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);        intent.addCategory(Intent.CATEGORY_OPENABLE);        intent.setType("image/*");        startActivityForResult(intent, REQUEST_IMAGE);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if(requestCode == REQEUST_CODE)        {            if(null != data){                //得到一个bundle                Bundle bundle = data.getExtras();                if(bundle == null){                    return;                }                //判断扫描是否成功                if(bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS){                    //获取扫描结果                    String result = bundle.getString(CodeUtils.RESULT_STRING);                    //吐司扫描结果                    Toast.makeText(this, result, Toast.LENGTH_SHORT).show();                }else{                    Toast.makeText(this, "解析失败", Toast.LENGTH_SHORT).show();                }            }        }else if(requestCode == REQUEST_IMAGE){//识别二维码图片结果的一个处理            if(null != data){                //处理扫描图片的结果                Uri uri = data.getData();                try {                    //得到图片路劲进行解析                    CodeUtils.analyzeBitmap(ImageUtil.getImageAbsolutePath(this, uri), new CodeUtils.AnalyzeCallback() {                        @Override                        public void onAnalyzeSuccess(Bitmap mBitmap, String result) {                            Toast.makeText(MainActivity.this, "解析结果:" + result, Toast.LENGTH_LONG).show();                        }                        @Override                        public void onAnalyzeFailed() {                            Toast.makeText(MainActivity.this, "解析二维码失败", Toast.LENGTH_LONG).show();                        }                    });                } catch (Exception e) {                    e.printStackTrace();                }            }        }    }}

//ImageUtil类
public class ImageUtil {    /**     * 根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换     *     * @param context     * @param imageUri     */    @TargetApi(19)    public static String getImageAbsolutePath(Context context, Uri imageUri) {        if (context == null || imageUri == null)            return null;        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, imageUri)) {            if (isExternalStorageDocument(imageUri)) {                String docId = DocumentsContract.getDocumentId(imageUri);                String[] split = docId.split(":");                String type = split[0];                if ("primary".equalsIgnoreCase(type)) {                    return Environment.getExternalStorageDirectory() + "/" + split[1];                }            } else if (isDownloadsDocument(imageUri)) {                String id = DocumentsContract.getDocumentId(imageUri);                Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));                return getDataColumn(context, contentUri, null, null);            } else if (isMediaDocument(imageUri)) {                String docId = DocumentsContract.getDocumentId(imageUri);                String[] split = docId.split(":");                String type = split[0];                Uri contentUri = null;                if ("image".equals(type)) {                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;                } else if ("video".equals(type)) {                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;                } else if ("audio".equals(type)) {                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;                }                String selection = MediaStore.Images.Media._ID + "=?";                String[] selectionArgs = new String[]{split[1]};                return getDataColumn(context, contentUri, selection, selectionArgs);            }        } // MediaStore (and general)        else if ("content".equalsIgnoreCase(imageUri.getScheme())) {            // Return the remote address            if (isGooglePhotosUri(imageUri))                return imageUri.getLastPathSegment();            return getDataColumn(context, imageUri, null, null);        }        // File        else if ("file".equalsIgnoreCase(imageUri.getScheme())) {            return imageUri.getPath();        }        return null;    }    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {        Cursor cursor = null;        String column = MediaStore.Images.Media.DATA;        String[] projection = {column};        try {            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);            if (cursor != null && cursor.moveToFirst()) {                int index = cursor.getColumnIndexOrThrow(column);                return cursor.getString(index);            }        } finally {            if (cursor != null)                cursor.close();        }        return null;    }    /**     * @param uri The Uri to check.     * @return Whether the Uri authority is ExternalStorageProvider.     */    public static boolean isExternalStorageDocument(Uri uri) {        return "com.android.externalstorage.documents".equals(uri.getAuthority());    }    /**     * @param uri The Uri to check.     * @return Whether the Uri authority is DownloadsProvider.     */    public static boolean isDownloadsDocument(Uri uri) {        return "com.android.providers.downloads.documents".equals(uri.getAuthority());    }    /**     * @param uri The Uri to check.     * @return Whether the Uri authority is MediaProvider.     */    public static boolean isMediaDocument(Uri uri) {        return "com.android.providers.media.documents".equals(uri.getAuthority());    }    /**     * @param uri The Uri to check.     * @return Whether the Uri authority is Google Photos.     */    public static boolean isGooglePhotosUri(Uri uri) {        return "com.google.android.apps.photos.content".equals(uri.getAuthority());    }}

//Myapp类
public class Myapp extends Application {    @Override    public void onCreate() {        super.onCreate();        //初始化二维码扫描库        ZXingLibrary.initDisplayOpinion(this);    }

阅读全文

0 0