安卓產生二維碼 ==。以及中文亂碼問題，安卓產生中文亂碼

安卓產生二維碼 ==。以及中文亂碼問題，安卓產生中文亂碼

參考了http://blog.csdn.net/books1958/article/details/46346531

和http://www.cnblogs.com/mythou/p/3280023.html

 

很多文章用的都是舊的，過時了，找了半天只有這兩個是好用的 ==。

zing包是3.1, 連結如下  http://pan.baidu.com/s/1pKfkQVp

 

MainActivity代碼如下

package com.example.wang.bmap;import com.google.zxing.*;import android.graphics.Bitmap;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;import com.google.zxing.common.BitMatrix;import com.google.zxing.qrcode.QRCodeWriter;public class MainActivity extends AppCompatActivity {    private Button genButton;    private ImageView img;    private EditText input;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        // ATTENTION: This was auto-generated to implement the App Indexing API.        // See https://g.co/AppIndexing/AndroidStudio for more information.        genButton = (Button)findViewById(R.id.gen);        img = (ImageView)findViewById(R.id.img);        input = (EditText)findViewById(R.id.input);        createQR();    }    public void createQR(){        genButton.setOnClickListener(new View.OnClickListener() {                    public void onClick(View arg0) {                        String in = input.getText().toString();                        try {                            BitMatrix qrcode = new QRCodeWriter().encode(in, BarcodeFormat.QR_CODE, 400, 400);                            int[] pixels = new int[400 * 400];                            for (int y = 0; y < 400; y++) {                                for (int x = 0; x < 400; x++) {                                    if (qrcode.get(x, y)) {                                        pixels[y * 400 + x] = 0xff000000;                                    } else {                                        pixels[y * 400 + x] = 0xffffffff;                                    }                                }                            }                            Bitmap bitmap = Bitmap.createBitmap(400, 400, Bitmap.Config.ARGB_8888);                            bitmap.setPixels(pixels, 0, 400, 0, 0, 400, 400);                            img.setImageBitmap(bitmap);                        } catch (WriterException e) {                            e.printStackTrace();                        }                    }                }        );    }/**/}

　　

xml代碼

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.wang.bmap.MainActivity">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="從下邊產生二維碼" />    <EditText        android:id="@+id/input"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginTop="10dp"        android:hint="請輸入要產生的二維碼文字" />    <Button        android:id="@+id/gen"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@+id/input"        android:layout_marginTop="10dp"        android:text="產生二維碼" />    <ImageView        android:id="@+id/img"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/gen"        android:layout_centerHorizontal="true"        android:layout_marginTop="10dp" /></RelativeLayout>

 

大概是醬紫　　

 

 

亂碼問題，直接google就各種答案，我採用的是

 Hashtable hints = new Hashtable();hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");BitMatrix qrcode = new QRCodeWriter().encode(in, BarcodeFormat.QR_CODE, 400, 400,hints);

　　效果