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!
它运行了!感谢您提供的数据方案和关于ACTION_PACKAGE_INSTALL的信息- johann