1. 在project的build.gradle添加如下代码(如下图)
allprojects {
repositories {
jcenter()
maven { url "https://jitpack.io" }
}
}
2. 在Module的build.gradle添加依赖
compile 'com.github.open-android:Zxing:v1.0.3'
3.清单文件添加权限
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
4.添加布局视图并在MainActivity中添加id
4.1:
?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="test.bwie.com.wzq_17108.MainActivity"
android:orientation="vertical">
<EditText
android:id="@+id/et"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="输入内容,生成二维码"
android:text="http://baidu.com" />
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="生成二维码" />
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="扫码(支持识别相册二维码)" />
<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
<TextView
android:id="@+id/tv_result"
android:text="扫描返回bitmap"
android:gravity="center"
android:textSize="18sp"
android:textColor="#FF0000"
android:layout_marginTop="30dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<ImageView
android:id="@+id/image_callback"
android:layout_marginTop="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
</LinearLayout>
implements View.OnClickListener
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button mBtn1;
private EditText mEt;
private Button mBtn2;
private ImageView mImage;
private final static int REQ_CODE = 1028;
private Context mContext;
private TextView mTvResult;
private ImageView mImageCallback;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//控件的点击事件和 Id
initView();
mContext = this;
}
private void initView() {
//id控件
mEt = (EditText) findViewById(R.id.et);
mBtn1 = (Button) findViewById(R.id.btn1);
mBtn2 = (Button) findViewById(R.id.btn2);
mImage = (ImageView) findViewById(R.id.image);
mTvResult = (TextView) findViewById(R.id.tv_result);
mImageCallback = (ImageView) findViewById(R.id.image_callback);
//点击事件
mBtn1.setOnClickListener(this);
mBtn2.setOnClickListener(this);
mImage.setOnClickListener(this);
mTvResult.setOnClickListener(this);
mImageCallback.setOnClickListener(this);
}
//重写的onclick 事件
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
// startActivity(new Intent(MainActivity.this, CaptureActivity.class));
Intent intent = new Intent(mContext, CaptureActivity.class);
startActivityForResult(intent, REQ_CODE);
break;
case R.id.btn2:
mImage.setVisibility(View.VISIBLE);
//隐藏扫码结果view
mImageCallback.setVisibility(View.GONE);
mTvResult.setVisibility(View.GONE);
String content = mEt.getText().toString().trim();
Bitmap bitmap = null;
try {
bitmap = BitmapUtils.create2DCode(content);//根据内容生成二维码
mTvResult.setVisibility(View.GONE);
mImage.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}
break;
}
}
//扫描二维码返回的结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQ_CODE) {
mImage.setVisibility(View.GONE);
mTvResult.setVisibility(View.VISIBLE);
mImageCallback.setVisibility(View.VISIBLE);
String result = data.getStringExtra(CaptureActivity.SCAN_QRCODE_RESULT);
Bitmap bitmap = data.getParcelableExtra(CaptureActivity.SCAN_QRCODE_BITMAP);
mTvResult.setText("扫码结果:"+result);
showToast("扫码结果:" + result);
if(bitmap != null){
mImageCallback.setImageBitmap(bitmap);//现实扫码图片
}
}
}
//调用返回的二维码 吐司打印
private void showToast(String msg) {
Toast.makeText(mContext, "" + msg, Toast.LENGTH_SHORT).show();
}
}