allprojects {  repositories {    maven {       url 'https://jitpack.io'     }  }}

dependencies {  compile 'com.github.goodboy321:Scan-Zxing:1.0'}

<EditText  android:id="@+id/et"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:hint="輸入內容，生成二維碼"  android:text="http://www.baidu.com" /><Button  android:background="@color/colorAccent"  android:id="@+id/btn2"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:text="生成二維碼" /><Button  android:layout_marginTop="10dp"  android:background="@color/colorPrimaryDark"  android:id="@+id/btn1"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:text="掃碼（識別相冊中二維碼）" /><ImageView  android:id="@+id/image"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_gravity="center_horizontal" /><ImageView  android:id="@+id/image_callback"  android:layout_marginTop="10dp"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:layout_gravity="center_horizontal" />

public void onClick(View view) {  switch (view.getId()) {    case R.id.btn1:      Intent intent = new Intent(mContext, CaptureActivity.class);      startActivityForResult(intent, REQUEST);      break;    case R.id.btn2:      image.setVisibility(View.VISIBLE);      //隱藏掃碼結果view      imageCallback.setVisibility(View.GONE);      String content = et.getText().toString().trim();      Bitmap bitmap = null;      try {        bitmap = BitmapUtils.create2DCode(content);//根據內容生成二維碼        tvResult.setVisibility(View.GONE);        image.setImageBitmap(bitmap);      } catch (Exception e) {        e.printStackTrace();      }      break;   }}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {  super.onActivityResult(requestCode, resultCode, data);  if (requestCode == REQUEST) {    image.setVisibility(View.GONE);    imageCallback.setVisibility(View.VISIBLE);    String result = data.getStringExtra(CaptureActivity.SCAN_QRCODE_RESULT);    Bitmap bitmap = data.getParcelableExtra(CaptureActivity.SCAN_QRCODE_BITMAP);    if(bitmap != null){      imageCallback.setImageBitmap(bitmap);//現實掃碼圖片    }  }