本文實例講述了Android編程實現(xiàn)對話框Dialog背景透明功能。分享給大家供大家參考,具體如下:
先看效果:

這是我做的一個撥號器強的面板,撥號的時候會查詢手機中的聯(lián)系人,顯示在撥號面板上方,點擊彈出透明對話框供選擇。
這次重點是透明對話框。
先看對話框的theme,style文件:
<?xml version="1.0" encoding="utf-8"?><resources> <style name="selectorDialog" parent="@android:style/Theme.Dialog"> <item name="android:windowFrame">@null</item><!--邊框--> <item name="android:windowIsFloating">true</item><!--是否浮現(xiàn)在activity之上--> <item name="android:windowIsTranslucent">false</item><!--半透明--> <item name="android:windowNoTitle">true</item><!--無標題--> <item name="android:windowBackground">@drawable/selector_dialog_bg</item><!--背景透明--> <item name="android:backgroundDimEnabled">false</item><!--模糊--> <item name="android:backgroundDimAmount">0.6</item> </style></resources>
對話框背景@drawable/selector_dialog_bg:
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#333333"/> <stroke android:width="2dp" android:color="#99CC33" /> <padding android:left="5dp" android:top="5dp" android:right="5dp" android:bottom="5dp" /> <corners android:radius="8dp" /></shape>
然后是對話框的布局:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <ListView android:id="@+id/selector_dialog_listview" android:layout_width="fill_parent" android:layout_height="wrap_content" android:cacheColorHint="#00000000" android:scrollbars="none" android:dividerHeight="1.0dip" android:divider="#C4C4C4" /></LinearLayout>
程序中:
final View view = LayoutInflater.from(this).inflate(R.layout.selector_dialog, null);selectorDialog = new Dialog(DialerActivity.this, R.style.selectorDialog);selectorDialog.setContentView(view);final BaseAdapter adapter = new SelectorAdapter(DialerActivity.this, selectorList);ListView listView = (ListView) view.findViewById(R.id.selector_dialog_listview);listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //對話框中事件處理 }});listView.setAdapter(adapter);selectorDialog.show();selectorDialog.setCanceledOnTouchOutside(true);WindowManager windowManager = getWindowManager();Display display = windowManager.getDefaultDisplay();WindowManager.LayoutParams lp = selectorDialog.getWindow().getAttributes();lp.width = (int)(display.getWidth() * 0.9);if(selectorList.size() > 7) { lp.height = (int)(display.getHeight() * 0.9);}lp.alpha = 0.8f;selectorDialog.getWindow().setAttributes(lp); 其實主要是通過WindowManager.LayoutParams給對話框設置屬性。
希望本文所述對大家Android程序設計有所幫助。
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