Android 彈出式佈局之PopupWindow、BottomSheetDialog、PopupMenu的使用
阿新 • • 發佈:2018-12-20
文章目錄
1、PopupWindow
1-1、基本使用
if (mPopupWindow == null) { View layout = LayoutInflater.from(MainActivity.this) .inflate(R.layout.dialog_layout, null); mPopupWindow = new PopupWindow(); mPopupWindow.setContentView(layout); mPopupWindow.setWidth(WindowManager.LayoutParams.MATCH_PARENT); mPopupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); mPopupWindow.setFocusable(true); mPopupWindow.setOutsideTouchable(false); mPopupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null)); mPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() { @Override public void onDismiss() { } }); mPopupWindow.setAnimationStyle(R.style.dialogWindowAnimator); } if (!mPopupWindow.isShowing()) { mPopupWindow.showAtLocation(findViewById(R.id.btnOkHttp), Gravity.BOTTOM, 0, 0); }
1-2、適配虛擬按鍵
如果是華為手機類似這種存在虛擬按鍵的手機,需要加上
mPopupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
3、BottomSheetDialog
首先引入依賴
implementation 'com.android.support:design:28.0.0'
使用程式碼很簡單,由於是Dialog的子類,所以呼叫上差不多。
BottomSheetDialog dialog = new BottomSheetDialog(MainActivity.this); dialog.setContentView(R.layout.dialog_layout); dialog.show();
上面很簡單的三句話,就實現了之前Android 彈出式佈局之Dialog的使用中自下而上的帶動畫的彈框功能了。
3、PopupMenu
第一種使用方法getMenu()
新增
mPopupMenu = new PopupMenu(MainActivity.this, v);
mPopupMenu.getMenu().add("第一個");
mPopupMenu.getMenu().add("第二個");
mPopupMenu.getMenu().add("第三個");
mPopupMenu.show();
第二種使用方法``````新增
mPopupMenu = new PopupMenu(MainActivity.this, v); mPopupMenu.getMenuInflater().inflate(R.menu.popup_menu, mPopupMenu.getMenu()); mPopupMenu.show();
menu檔案
//popup_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/item1"
android:title="這是第一個item" />
<item
android:id="@+id/item2"
android:title="這是第二個item" />
<item
android:id="@+id/item3"
android:title="這是第三個item" />
</menu>
效果如下:
4、幾個常用的工具方法
/**
* Desc: 獲取虛擬按鍵高度 放到工具類裡面直接呼叫即可
*/
public static int getNavigationBarHeight(Context context) {
int result = 0;
if (hasNavBar(context)) {
Resources res = context.getResources();
int resourceId = res.getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
result = res.getDimensionPixelSize(resourceId);
}
}
return result;
}
/**
* 檢查是否存在虛擬按鍵欄
*/
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public static boolean hasNavBar(Context context) {
Resources res = context.getResources();
int resourceId = res.getIdentifier("config_showNavigationBar", "bool", "android");
if (resourceId != 0) {
boolean hasNav = res.getBoolean(resourceId);
// check override flag
String sNavBarOverride = getNavBarOverride();
if ("1".equals(sNavBarOverride)) {
hasNav = false;
} else if ("0".equals(sNavBarOverride)) {
hasNav = true;
}
return hasNav;
} else { // fallback
return !ViewConfiguration.get(context).hasPermanentMenuKey();
}
}
/**
* 判斷虛擬按鍵欄是否重寫
*/
private static String getNavBarOverride() {
String sNavBarOverride = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
try {
Class c = Class.forName("android.os.SystemProperties");
Method m = c.getDeclaredMethod("get", String.class);
m.setAccessible(true);
sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");
} catch (Throwable e) {
}
}
return sNavBarOverride;
}