service中加入dialog

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service是没有界面的，所以再service中加入的对话框是浮在activity'界面上的，这里的对话框会比较特殊一点，需要加一个属性：

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

还需要在manifest中添加一个权限：

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

自定义dialog的代码如下：

View v = LayoutInflater.from(mContext).inflate(R.layout.update_version_dialog, null);if (null == mUpdateDialog) {if (null == v) {return;}v.findViewById(R.id.group_item_recover_ok).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub}});v.findViewById(R.id.group_item_recover_cancle).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mUpdateDialog.dismiss();mUpdateDialog=null;}});//mUpdateDialog = new Dialog(mContext,android.R.style.Theme_Holo_Dialog_NoActionBar);mUpdateDialog = new Dialog(GetSdCardAndUsbDataService.this,android.R.style.Theme_Holo_Dialog_NoActionBar);LayoutParams lp=new LayoutParams(530, LayoutParams.WRAP_CONTENT);mUpdateDialog.setContentView(v,lp);Log.d(TAG, "Dialog setView success ");}if(null!=mUpdateDialog){Log.d(TAG, "null !=Dialog  ");/*if (null != parent) {parent.removeAllViews();}*/mUpdateDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);mUpdateDialog.show();Log.d(TAG, "Dialog show success ");}

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