安卓:应用程序安装/卸载的广播接收器

8

我希望安装一个apk文件并设置广播接收器以便获取有关安装状态的信息。

我准备了一个BroadcastReceiver类:

public class newPackageReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("DEBUG"," test for application install/uninstall");
    }

}

在主活动中,我首先注册一个新的接收器对象,然后实例化用于应用安装的按钮。
public void onCreate(Bundle savedInstanceState) {
...
IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_PACKAGE_ADDED);
        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
        filter.addAction(Intent.ACTION_PACKAGE_DATA_CLEARED);
        filter.addAction(Intent.ACTION_PACKAGE_INSTALL);
        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
        filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
        filter.addAction(Intent.ACTION_PACKAGE_RESTARTED);

        receiver = new newPackageReceiver();
        registerReceiver(receiver, filter);
        ...

dlButton.setText(R.string.dl_button);
dlButton.setOnClickListener(new AppliDownloadOnClickListener(this ));   


@Override
public void onDestroy(){
     unregisterReceiver(receiver);
     super.onDestroy();
}

在我的OnclickListener类中,我放置了以下代码:
@Override
    public void onClick(View v) {

    // actually, the below process is in an asyncTask
    URL url;
    Intent promptInstall;

    try {
        url = new URL(apkurl);

        HttpURLConnection c = (HttpURLConnection) url.openConnection();
        c.setRequestMethod("GET");
        c.setDoOutput(true);
        c.connect();

        String PATH = Environment.getExternalStorageDirectory()+ "/download/";
        File file = new File(PATH);
        file.mkdirs();
        File outputFile = new File(file, "app.apk");
        FileOutputStream fos = new FileOutputStream(outputFile);

        InputStream is = c.getInputStream();

        byte[] buffer = new byte[1024];
        int len1 = 0;
        while ((len1 = is.read(buffer)) != -1) {
            fos.write(buffer, 0, len1);
        }

        fos.close();
        is.close();

        promptInstall = new Intent(Intent.ACTION_VIEW);
        promptInstall.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "app.apk")), "application/vnd.android.package-archive");

        if (promptInstall != null) {
            activity.startActivity(promptInstall);
        } else {
            ErrorDetails.displayToastMessage(activity,R.string.connection_error);
        }


    } catch (...) {
        ...
    }

}

使用上述代码(我已经缩小了它),当按钮被点击时,安装程序会显示并完美地安装应用程序,但接收器类(newPackageReceiver)从未被调用。注册(registerReceiver)在onCreate方法中完成,而unregisterReceiver在onDestroy方法中调用,因此它应该是有效的。你知道为什么吗?
感谢您的阅读!
1个回答

9

完美的它运行了!感谢您提供的数据方案和关于ACTION_PACKAGE_INSTALL的信息 - johann
2
运行正常,但为什么? - aotian16

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