使用Dialog创建dialog时,即使不设置标题,标题部分依然存在,而使用AlertDialog不存在这个问题。不过在一些手机上会存在一个bug:虽然没有标题栏,但是标题栏所占的扣减还是存在的,大约有50dp左右的高度。下面是一个设置自定义对话框的demo。
布局文件:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="200dp" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <Button android:id="@+id/take_picture_btn" android:text="@string/take_picture" android:layout_width="100dp" android:layout_height="40dp" android:gravity="center" /> <Button android:id="@+id/take_video_btn" android:layout_width="100dp" android:layout_height="40dp" android:text="@string/take_video" /> </LinearLayout>java代码: private void createControlPanel() { AlertDialog.Builder builder = new AlertDialog.Builder(this); LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE); View layout = inflater.inflate(R.layout.control_panel, null); Button takePictureBtn = (Button) layout.findViewById(R.id.take_picture_btn); takePictureBtn.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // Does some things. } }); final Button takeVideoBtn = (Button) layout.findViewById(R.id.take_video_btn); takeVideoBtn.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // Does .... } }); builder.setView(layout); //这句非常重要 builder.setOnKeyListener(new DialogInterface.OnKeyListener() { @Override public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { //点击返回键时,需要做出的反应 // Does ... return true; } return false; } }); dialog = builder.create(); }
设置Dialog的参数,需要在show()方法后面设置:
dialog.show()
WindowManager.LayoutParams params = dialog.getWindow().getAttributes();
params.alpha = 0.8f; //透明度
params.width = 460; //dialog宽度
params.y = height -20; //显示位置,默认居中显示
controlPanel.getWindow().setAttributes(params);