Dialog 常用的用户交互



Dialog 常用的用户交互

Dialog 是提示的窗体，默认为当我们点击空白处或者点返回键时Dialog 会消失。如果想要Dialog点击空白区不消失，按返回键时消失。代码如下：

private void showDialog(){AlertDialog.Builder  dialog = new AlertDialog.Builder(this);  dialog.setTitle(getString(R.string.save));dialog.setIcon(R.drawable.ic_launcher);dialog.setCancelable(false);// 设置点击屏幕和返回键Dialog不消失dialog.setOnKeyListener(new OnKeyListener() {@Overridepublic boolean onKey(DialogInterface arg0, int arg1, KeyEvent arg2) {//监听返回键在这里关闭Dialog按返回键就能消失return false;}});dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {}});dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {}});AlertDialog aler = dialog.create();aler.show();}

在我们自定义Dialog布局中带有输入框，AlertDialog.setView()时软键盘弹不出来怎么解决。代码如下：

private void showSaveDialog() {Builder dialog = new AlertDialog.Builder(this);dialog.show();dialog.setTitle(getString(R.string.save));final EditSaveView view = new EditSaveView(this)；dialog.setView(view);//弹出软键盘dialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);dialog.setConfirmListener(null, new View.OnClickListener() {@Overridepublic void onClick(View v) {}});}

自定义Dialog 布局,控制Dialog显示的大小.代码如下:

private void showDialog() {dialog = new Dialog(context, R.style.CustomDialog);View view = inflater.inflate(R.layout.equalizer_dialog, null);mReset = (ImageView) view.findViewById(R.id.main_dailog_reset);mClose = (ImageView) view.findViewById(R.id.main_dailog_close);mRoot = (ViewGroup) view.findViewById(R.id.equalizer_progressbar_parent);dialog.setContentView(view);dialog.setCancelable(false);dialog.setCanceledOnTouchOutside(false);dialog.show();WindowManager.LayoutParams params = dialog.getWindow().getAttributes();params.width = ScreenUtil.getWindowsW(context) * 4 / 5;params.height = ScreenUtil.getWindowsH(context) * 4 / 5;dialog.getWindow().setAttributes(params);initEvent();setProgressbar();}

通过WindowManager窗体机制来设置Dialog窗体的大小,我们也可以通过样式来设置背景颜色及透明程度,是否有标题,是否浮现在activity之上,是否模糊等属性.样式代码如下:

 <style name="CustomDialog" parent="android:style/Theme.Holo.Light.Dialog">        <!-- 背景颜色及透明程度 -->        <item name="android:windowBackground">@android:color/white</item>        <!-- 是否有标题 -->        <item name="android:windowNoTitle">true</item>        <!-- 是否浮现在activity之上 -->        <item name="android:windowIsFloating">true</item>        <!-- 是否模糊 -->        <item name="android:backgroundDimEnabled">true</item>    </style>