1.MyApp中初始化
package com.example.zxingdemo; import android.app.Application; import android.util.Log; import com.dash.zxinglibrary.activity.ZXingLibrary; public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); Log.e("MyApp","MyApp 执行了"); //初始化类库 ZXingLibrary.initDisplayOpinion(this); } }
2.main类中
package com.example.zxingdemo; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import com.dash.zxinglibrary.activity.CaptureActivity; import com.dash.zxinglibrary.activity.CodeUtils; public class MainActivity extends AppCompatActivity implements View.OnClickListener { /** * 开启二维码扫描 */ private Button mBtStart; /** * 开启自己二维码扫描 */ private Button mBtStart2; /** * 生成二维码 */ private Button mBtStart3; private ImageView mIv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { mBtStart = (Button) findViewById(R.id.btStart); mBtStart.setOnClickListener(this); mBtStart2 = (Button) findViewById(R.id.btStart2); mBtStart2.setOnClickListener(this); mBtStart3 = (Button) findViewById(R.id.btStart3); mBtStart3.setOnClickListener(this); mIv = (ImageView) findViewById(R.id.iv); } @Override public void onClick(View v) { switch (v.getId()) { default: break; case R.id.btStart: Intent intent = new Intent(this, CaptureActivity.class); startActivityForResult(intent, 1); break; case R.id.btStart2: Intent intent2 = new Intent(this, MyCaptureActivity.class); startActivityForResult(intent2, 1); break; case R.id.btStart3: //生成二维码 Bitmap logo = BitmapFactory.decodeResource(getResources(), R.drawable.a); Bitmap bitmap = CodeUtils.createImage("1512Q", 200, 200, logo); mIv.setImageBitmap(bitmap); break; } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { //取Bundle if (requestCode == 1) { Bundle bundle = intent.getExtras(); if (bundle == null) { return; } if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) { String string = bundle.getString(CodeUtils.RESULT_STRING); Toast.makeText(MainActivity.this, "扫描内容是:" + string, Toast.LENGTH_SHORT).show(); } else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) { Toast.makeText(MainActivity.this, "扫描失败", Toast.LENGTH_SHORT).show(); } } } }