Question

我已将zxing lib com.google/com.google.zxing.client.android.captureactivity.jar.zip(497 k）导入到我的项目中。然后我以这种方式在我的项目中有一个imporgted BeepManager类：

import com.google.zxing.client.android.BeepManager;
private BeepManager beepManager;
beepManager = new BeepManager(activity);

在import语句之后，我有这个错误提示：

The constructor BeepManager(Activity) is not visible

编辑：

DecodeHandler(CaptureActivity activity) {
        this.activity = activity;
        baseApi = activity.getBaseApi();
        beepManager = new BeepManager(CaptureActivity.this);
        beepManager.updatePrefs();

请问可能出错......

Answer 1

尝试改变这一点：

beepManager = new BeepManager(activity);

对此：

beepManager = new BeepManager(<ActivityName>.this);

编辑：问题出现了，因为您正在Class的实例上发送类标识符，您可以通过更改它来解决它：

DecodeHandler(CaptureActivity activity) {
        this.activity = activity;
        baseApi = activity.getBaseApi();
        beepManager = new BeepManager(CaptureActivity.this);
        beepManager.updatePrefs();

到

DecodeHandler(CaptureActivity activity) {
        this.activity = activity;
        baseApi = activity.getBaseApi();
        beepManager = new BeepManager(activity);
        beepManager.updatePrefs();

构造函数BeepManager（Activity）不可见

1 个答案: