呼叫外部程式Barcode Scanner 進行編碼/解碼

if (getPackageManager().queryIntentActivities(new Intent(
    "com.google.zxing.client.android.SCAN"), PackageManager.MATCH_DEFAULT_ONLY).size() == 0) {
    //表示未安裝
}

//2D 解碼
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
 
//1D 解碼
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "PRODUCT_MODE");
startActivityForResult(intent, 0);
 
//傳回結果
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == 0) {
        if (resultCode == RESULT_OK) {//掃描成功
            String contents = intent.getStringExtra("SCAN_RESULT");
            String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
            Toast.makeText(this, "Content:" + contents + " Format:" + format, Toast.LENGTH_LONG).show();
        } else if (resultCode == RESULT_CANCELED) {// Handle cancel
            Toast.makeText(this, "取消掃描!", Toast.LENGTH_LONG).show();
        }
    }
}

//TEXT, EMAIL, PHONE, SMS 格式
Intent i = new Intent("com.google.zxing.client.android.ENCODE");
i.putExtra("ENCODE_TYPE", "TEXT_TYPE");//EMAIL_TYPE,PHONE_TYPE,SMS_TYPE
i.putExtra("ENCODE_DATA", "編碼資料內容" );
startActivity(i);
 
//聯絡人格式
Intent i = new Intent("");
Bundle b = new Bundle("com.google.zxing.client.android.ENCODE");
b.putString(Contacts.Intents.Insert.NAME, "Shioulo");
b.putString(Contacts.Intents.Insert.PHONE, "1234567");
b.putString(Contacts.Intents.Insert.EMAIL, "shioulo@barcode.com");
b.putString(Contacts.Intents.Insert.POSTAL, "123 Google St. Android");
b.putString(Contacts.Intents.Insert.NOTES, "ps data...");
i.putExtra(Intents.Encode.TYPE, CONTACT);
i.putExtra(Intents.Encode.DATA, bundle);
startActivity(i);