java.lang.RuntimeException: Only one Looper may be created per thread

开发笔记：在service中弹dialog

 java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()出现这个错误

最后是看这个朋友的才弄好：http://blog.csdn.net/a740169405/article/details/11720585

调用系统权限：

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /><uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW" />

service中的代码：

    new Thread(){        public void run() {            Looper.prepare();             LayoutInflater inflater = (LayoutInflater) mContext .getSystemService(Context.LAYOUT_INFLATER_SERVICE);                View alert_view=inflater.inflate(R.layout.custom_alert_dialog,null);                Button alert_assign= (Button) alert_view.findViewById(R.id.alert_assign);                alert_cancel = (Button) alert_view.findViewById(R.id.alert_cancel);                TextView alert_message = (TextView) alert_view.findViewById(R.id.alert_message);                alert_message.setText(message);                countTimer = new CountTimer(15000,1000);            final AlertDialog.Builder builder = new AlertDialog.Builder( mContext);// Builder，可以通过此builder设置改变AleartDialog的默认的主题样式及属性相关信息            builder.setView(alert_view);            alert_assign.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    cancle();// 当取消对话框后进行操作一定的代码？取消对话框                }            });            alert_cancel.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    cancle();                }            });            alertDialog = builder.create();            alertDialog.setCancelable(false);            alertDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);            alertDialog.show();            countTimer.start();            Looper.loop();                }    }.start();}

调用系统的dialog要设置：

 alertDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);