Android 生成二維碼
阿新 • • 發佈:2018-11-28
1.佈局
Xml
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center"> <EditText android:id="@+id/sou" android:layout_width="wrap_content" android:layout_height="wrap_content" android:ems="10" android:hint="請輸入文字"/> <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="搜尋"/> </LinearLayout> <ImageView android:id="@+id/img" android:layout_width="300dp" android:layout_height="300dp" android:layout_gravity="center_horizontal"/>
MainActivity
package com.bwie.demo1;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import com.uuzuche.lib_zxing.activity.CodeUtils;
public class MainActivity extends AppCompatActivity {
private EditText mSou; private Button mBtn; private ImageView mImg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //找控制元件 mSou = findViewById(R.id.sou); mBtn = findViewById(R.id.btn); mImg = findViewById(R.id.img); //輸入內容後點擊搜尋生成一個二維碼 mBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String msou = mSou.getText().toString().trim(); if (TextUtils.isEmpty(msou)){ return; } Bitmap image = CodeUtils.createImage(msou, 300, 300, BitmapFactory.decodeResource(getResources(),0)); mImg.setImageBitmap(image); } }); }
}
2.千萬記得在build匯入這個程式碼片段
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
}
}
}
}
3.現在是兩個依賴
//加入兩個依賴
implementation 'com.android.support:design:28.1.1'
compile 'cn.yipianfengye.android:zxing-library:1.9'