如何在另一个活动中打开警报对话框

时间:2016-10-28 03:17:31

标签: android android-intent android-alertdialog

如何在非活动的新活动中打开对话框?我有一个运行倒数计时器的服务,当倒计时器结束时,我希望它在主活动中打开一个对话框。我似乎无法弄清楚这一点。我已经尝试过正常设置警报对话框但没有工作,我尝试发送含有额外内容和捆绑包的意图但仍然没有运气。我在Google上搜索了一些帮助,并厌倦了this link的解决方案。

        @Override
        public void onFinish() {
            Log.i(TAG, "Timer finished");
            cdt.start();
            showNotification();
            addpoints();
            savepref();
            Intent intent = new Intent(BroadcastService.this,  MainActivity.class);
            Bundle bundle = new Bundle();
            bundle.putInt("alert_icon_res_id", android.R.drawable.ic_dialog_info);
            bundle.putString("alert_title", "Some Title");
            bundle.putString("alert_message", "Some message");
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            startActivity(intent);





        }
    };

    cdt.start();
}

此处的主要活动代码:

    setContentView(R.layout.activity_main);

    startService(new Intent(this, BroadcastService.class));
    Log.i(TAG, "Started service");

    Bundle b = getIntent().getExtras();
    if (b != null && b.containsKey("alert_icon_res_id")) {
        int icon = b.getInt("alert_icon_res_id");
        String title = b.getString("alert_title");
        String message = b.getString("alert_message");

        new AlertDialog.Builder(this).setIcon(icon)
                .setTitle(title).setMessage(message)
                .setPositiveButton("Close", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                }).create().show();
    }

1 个答案:

答案 0 :(得分:0)

OnFinish中,您尚未将捆绑包放入意图中。

试试这个:

Bundle bundle = new Bundle();

bundle.putInt("alert_icon_res_id", android.R.drawable.ic_dialog_info);

bundle.putString("alert_title", "Some Title");

bundle.putString("alert_message", "Some message");

intent.putExtras(bundle);   // add this line

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

startActivity(intent);
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