二维码扫描

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="scan"
        android:text="扫描二维码" />

    <TextView
        android:id="@+id/tv_ruselt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="26sp" />

    <EditText
        android:id="@+id/et_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="make"
        android:text="生成二维码" />

    <CheckBox
        android:id="@+id/is_logo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="check" />

    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:src="@mipmap/ic_launcher" />
</LinearLayout>




public class MainActivity extends AppCompatActivity {

    private TextView mTv_Ruslet;
    private EditText mInput;
    private ImageView mImg;
    private CheckBox isLogo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTv_Ruslet = (TextView) findViewById(R.id.tv_ruselt);
        mInput = (EditText) findViewById(R.id.et_text);
        mImg = (ImageView) findViewById(R.id.img);
        isLogo = (CheckBox) findViewById(R.id.is_logo);
    }

    /**
     * 生成二维码
     */
    public void make(View view) {
        String input = mInput.getText().toString().trim();
        //生成二维码，然后为二维码增加logo
        Bitmap bitmap = EncodingUtils.createQRCode(input, 500, 500,
                isLogo.isChecked() ? BitmapFactory.decodeResource(getResources(),
                        R.mipmap.ic_launcher) : null
        );
        mImg.setImageBitmap(bitmap);
    }

    /**
     * 扫描二维码
     */
    public void scan(View view) {
        startActivityForResult(new Intent(MainActivity.this, CaptureActivity.class), 0);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            Bundle bundle = data.getExtras();
            String result = bundle.getString("result");
            mTv_Ruslet.setText(result);
            mInput.setText(result);
        } else if (resultCode == RESULT_CANCELED) {
            mTv_Ruslet.setText("扫描出错");
        }
    }
将工程与工具包绑定 将15改为16