zxing依賴： compile 'cn.yipianfengye.android:zxing-library:2.2' 初始化：private String SAVE_PIC_PATH = Environment.getExternalStorageState().equalsIgnoreCase(Environment.MEDIA_MOUNTED)? Environment.getExternalStorageDirectory().getAbsolutePath() : "/mnt/sdcard";//private String SAVE_REAL_PATH = SAVE_PIC_PATH + "/good/savePic";//保存的確 Bitmap bitmap; private String ends;

實現長按識別圖片二維碼：

imageView.setOnLongClickListener(new View.OnLongClickListener() {@Overridepublic boolean onLongClick(View view) {try {Bitmap bmp = captureScreen(MainActivity.this);saveFile(bmp, System.currentTimeMillis() + ".png");try {CodeUtils.analyzeBitmap(ends, new CodeUtils.AnalyzeCallback() {@Overridepublic void onAnalyzeSuccess(Bitmap mBitmap, String result) { // imageView.setImageBitmap(mBitmap);Toast.makeText(MainActivity.this, "解析結果:" + result, Toast.LENGTH_LONG).show();}@Overridepublic void onAnalyzeFailed() {Toast.makeText(MainActivity.this, "解析二維碼失敗", Toast.LENGTH_LONG).show();}});} catch (Exception e) {e.printStackTrace();}} catch (IOException e) {e.printStackTrace();}return false;}});

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工具方法1：

private void saveFile(Bitmap bm, String fileName) throws IOException {String subForder = SAVE_REAL_PATH;File foder = new File(subForder);if (!foder.exists()) foder.mkdirs();File myCaptureFile = new File(subForder, fileName);Log.e("lgq", "圖片保持。。。。wwww。。。。" + myCaptureFile);ends = myCaptureFile.getPath();if (!myCaptureFile.exists()) myCaptureFile.createNewFile();BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));bm.compress(Bitmap.CompressFormat.JPEG, 100, bos);bos.flush();bos.close(); // ToastUtil.showSuccess(getApplicationContext(), "已保存在/good/savePic目錄下", Toast.LENGTH_SHORT);//發送廣播通知系統}

工具方法2：

@SuppressLint("NewApi")
private Bitmap captureScreen(Activity context) {
??? View cv = context.getWindow().getDecorView();

??? cv.setDrawingCacheEnabled(true);
??? cv.buildDrawingCache();
??? Bitmap bmp = cv.getDrawingCache();
??? if (bmp == null) {
??????? return null;
??? }

??? bmp.setHasAlpha(false);
??? bmp.prepareToDraw();
??? return bmp;
}

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權限：

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

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Android6.0以上申請權限：

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public final class CheckPermissionUtils {private CheckPermissionUtils() {}//需要申請的權限private static String[] permissions = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.CAMERA};//檢測權限public static String[] checkPermission(Context context){List<String> data = new ArrayList<>();//存儲未申請的權限for (String permission : permissions) {int checkSelfPermission = ContextCompat.checkSelfPermission(context, permission);if(checkSelfPermission == PackageManager.PERMISSION_DENIED){//未申請data.add(permission);}}return data.toArray(new String[data.size()]);} }

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/*** 初始化權限事件*/ private void initPermission() {//檢查權限String[] permissions = CheckPermissionUtils.checkPermission(this);if (permissions.length == 0) {//權限都申請了//是否登錄} else {//申請權限ActivityCompat.requestPermissions(this, permissions, 100);} }

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