如何获得后台进程的结果,在任何Activity
?显示从后台进程的警告对话框中的任何活动
我与OTA更新工作。应用程序在处理程序中处理后台。更新完成后,我必须向用户显示警报对话框。我可以在SettingsActivity
中显示它,我从OTA开始,但用户可以在任何其他Activity
。
private void checkIsUpdated() {
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
mDevice.getDevice().read(GattUUID.LS_DEVICE_INFORMATION, GattUUID.LC_FIRMWARE, new
BleDevice.ReadWriteListener() {
@Override
public void onEvent(ReadWriteEvent e) {
if (e.wasSuccess()) {
if (firmwareVersion.equals(e.data_string())) {
showAlertDialog("OTA update failed", "Device is not updated");
} else {
showAlertDialog("OTA update is successful.\nDevice is updated to new " +
"firmware!", "Device is updated");
}
Log.i("OTA", "Read firmware is new success");
} else {
Log.e("OTA", "Read firmware is new success");
}
}
});
}
}, 30000);
}
AlertDialog
代码
private void showAlertDialog(String message, String title) {
AlertDialog.Builder builder = new AlertDialog.Builder(mContext, R.style.SwipeDialogLight);
builder.setTitle(title)
.setMessage(message)
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
if (!alert.isShowing()) {
alert.show();
}
}
你试过广播接收器吗? – rogerwar
我必须在每项活动中注册它吗? – Adnan
我想只是为了提醒对话框,只能从应用程序的启动画面进行注册。 – rogerwar