PopupWindow在项目中的使用并指定位置及加入动画效果

2019独角兽企业重金招聘Python工程师标准>>>

项目做到一期收尾阶段，突然要用到弹出窗口，于是自然而然的就想起了PopupWindow这个组件了，才发现平时用的少，对这个组件几乎是完全无知的状态啊。

于是恶补一番

现在放出学习成果——————请无视展示效果

救我理解来看，PopupWindow 其实关键来说就是个Window容器，既然是容器，那么必然有他自己的宽高，但是内容就由着开发者自己定义了。

所以第一步先定义两个变量

PopupWindow pop;//弹出窗口的容器
View view; //容器内放置的内容

然后我们来看初始化方法：

private void initPopupWindow(String json) {
if (json == null || json.equals("")) {
ToastUtil.WarnImageToast(Phone_MainActivity.this, "今日油价获取失败",
"short");
return;
}
String oil_text_90;
String oil_text_93;
String oil_text_97;
String oil_text_0;
OilBean ob = gson.fromJson(json, OilBean.class);
oil_text_0 = ob.getShowapi_res_body().getList().get(0).getP0();
oil_text_90 = ob.getShowapi_res_body().getList().get(0).getP90();
oil_text_93 = ob.getShowapi_res_body().getList().get(0).getP93();
oil_text_97 = ob.getShowapi_res_body().getList().get(0).getP97();
view = this.getLayoutInflater().inflate(R.layout.popup_window, null);
CustomRLayout oil90 = (CustomRLayout) view
.findViewById(R.id.oil_90_layout);
CustomRLayout oil93 = (CustomRLayout) view
.findViewById(R.id.oil_93_layout);
CustomRLayout oil97 = (CustomRLayout) view
.findViewById(R.id.oil_97_layout);
CustomRLayout oil0 = (CustomRLayout) view
.findViewById(R.id.oil_0_layout);
oil90.setRightText("￥" + oil_text_90);
oil93.setRightText("￥" + oil_text_93);
oil97.setRightText("￥" + oil_text_97);
oil0.setRightText("￥" + oil_text_0);
pop = new PopupWindow(view, ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
pop.setAnimationStyle(R.style.popwin_anim_style);
pop.setOutsideTouchable(false);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
pop.dismiss();
}
});
}

整个过程非常简单：

首先判断传入的网络json是有数据的，然后对Json数据进行解析，将解析后的数据放入到指定的View的组件中去。

注意观察可以发现，在这个方法中用到了一个布局 R.layout.popup_window

我们来看看这个布局吧：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res/com.dhcc.gpscarmanager_phone"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/oil_window_shape"
android:gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dip"
android:text="今日油价"
android:textColor="@color/white"
android:textSize="@dimen/text_normal_size" />
<View
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_margin="2dip"
android:background="@color/line_gray" />
<com.dhcc.gpscarmanager_phone.CustomView.CustomRLayout
android:id="@+id/oil_90_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2dip"
android:layout_marginRight="2dip"
android:background="@color/red"
custom:leftText="90#汽油"
custom:leftTextColor="@color/white"
custom:leftTextSize="@dimen/text_small_size"
custom:rightText="￥6.98"
custom:rightTextColor="@color/white"
custom:rightTextSize="@dimen/text_small_size" />
<View
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_margin="2dip"
android:background="@color/line_gray" />
<com.dhcc.gpscarmanager_phone.CustomView.CustomRLayout
android:id="@+id/oil_93_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2dip"
android:layout_marginRight="2dip"
custom:leftText="93#汽油"
custom:leftTextColor="@color/white"
custom:leftTextSize="@dimen/text_small_size"
custom:rightText="￥5.92"
custom:rightTextColor="@color/white"
custom:rightTextSize="@dimen/text_small_size" />
<View
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_margin="2dip"
android:background="@color/line_gray" />
<com.dhcc.gpscarmanager_phone.CustomView.CustomRLayout
android:id="@+id/oil_97_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2dip"
android:layout_marginRight="2dip"
custom:leftText="97#汽油"
custom:leftTextColor="@color/white"
custom:leftTextSize="@dimen/text_small_size"
custom:rightText="￥7.62"
custom:rightTextColor="@color/white"
custom:rightTextSize="@dimen/text_small_size" />
<View
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_margin="2dip"
android:background="@color/line_gray" />
<com.dhcc.gpscarmanager_phone.CustomView.CustomRLayout
android:id="@+id/oil_0_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2dip"
android:layout_marginRight="2dip"
custom:leftText="柴油"
custom:leftTextColor="@color/white"
custom:leftTextSize="@dimen/text_small_size"
custom:rightText="￥6.28"
custom:rightTextColor="@color/white"
custom:rightTextSize="@dimen/text_small_size" />
<View
android:layout_width="match_parent"
android:layout_height="1dip"
android:layout_margin="2dip"
android:background="@color/line_gray" />
</LinearLayout>