Android 掃描二維碼
阿新 • • 發佈:2018-12-20
首先佈局
xml
<Button android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="開啟二維碼掃描介面"/>
MainActivity
package com.bwie.a20181106_a;
import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast;
import com.uuzuche.lib_zxing.activity.CaptureActivity; import com.uuzuche.lib_zxing.activity.CodeUtils;
public class MainActivity extends AppCompatActivity {
private Button mBtn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mBtn = findViewById(R.id.btn); mBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this,CaptureActivity.class); startActivityForResult(intent,1); } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); /** * 處理二維碼的掃描結果 */ if (requestCode == 1){ //處理掃描結果(在介面上顯示) if (data != null){ Bundle bundle = data.getExtras(); if (bundle == null){ return; } if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS){ String result = bundle.getString(CodeUtils.RESULT_STRING); Toast.makeText(this,"解析結果"+result,Toast.LENGTH_LONG).show(); }else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED){ Toast.makeText(this,"解析二維碼失敗",Toast.LENGTH_LONG).show(); } } } }
} 建立一個類
MyApplication
public void onCreate() {
super.onCreate();
ZXingLibrary.initDisplayOpinion(this);
}
在build裡邊寫入下邊
configurations.all { resolutionStrategy.eachDependency { DependencyResolveDetails details -> def requested = details.requested if (requested.group == 'com.android.support') { if (!requested.name.startsWith("multidex")) { details.useVersion '27.1.1' //這裡改為你專案使用的版本即可 } } } }
匯入依賴 implementation ‘cn.yipianfengye.android:zxing-library:2.2’ 寫入許可權
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<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.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
//千萬要記得Application 寫入這句話 否則 嘿嘿O(∩_∩) 讓你找半天Bug
android:name=".MyApplication"