Android实现扫描和生成二维码
2020-07-19 本文已影响0人
i小灰
Android实现扫描和生成二维码的具体代码,供大家参考,具体内容如下
需求:
就是需要把数据存放到二维码中,然后通过扫描二维码拿到数据,并展示到页面上。
功能展示:
Android实现扫描和生成二维码 Android实现扫描和生成二维码代码实现:
1.引用第三方
//AndroidX 版本
implementation 'com.king.zxing:zxing-lite:1.1.7-androidx'
2.在AndroidManifest.xml 声明CaptureActivity
<activity
android:name="com.king.zxing.CaptureActivity"
android:screenOrientation="fullSensor"
android:theme="@style/CaptureTheme" />
3.主要代码
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import com.king.zxing.CaptureActivity;
import com.king.zxing.util.CodeUtils;
import org.json.JSONObject;
import static com.king.zxing.CaptureFragment.KEY_RESULT;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
protected EditText edtResutlt;
protected Button btnScan;
protected Button btnCreate;
protected EditText edtData;
protected ImageView ivQr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.activity_main);
PermissionUtils.applyPermission(this);
initView();
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.btn_scan) {
//跳转到扫描界面
Intent intent = new Intent(this, CaptureActivity.class);
startActivityForResult(intent, 1);
} else if (view.getId() == R.id.btn_create) {
String data = edtData.getText().toString().trim();
if (TextUtils.isEmpty(data)) {
Toast.makeText(this, "请输入文字", Toast.LENGTH_SHORT).show();
} else {
//生成二维码
Bitmap qrCode = CodeUtils.createQRCode(data, 600, null);
ivQr.setImageBitmap(qrCode);
}
}
}
/**
* 在该方法中拿到扫描的数据
* @param requestCode
* @param resultCode
* @param data
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == 1) {
String result = data.getStringExtra(KEY_RESULT);
Log.e("aaa", "resu-->" + result);
//展示到页面上
edtResutlt.setText(result);
}
}
}
private void initView() {
edtResutlt = (EditText) findViewById(R.id.edt_resutlt);
btnScan = (Button) findViewById(R.id.btn_scan);
btnScan.setOnClickListener(MainActivity.this);
btnCreate = (Button) findViewById(R.id.btn_create);
btnCreate.setOnClickListener(MainActivity.this);
edtData = (EditText) findViewById(R.id.edt_data);
ivQr = (ImageView) findViewById(R.id.iv_qr);
}
}
就这样 写完了