使用popupwindow創建对话框风格的窗口

使用popupwindow創建对话框风格的窗口
public class MainActivity extends Activity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.popupwindow);
// 加载r.layout.popup对应的布局文件
View root = this.getLayoutInflater().inflate(R.layout.popup, null);
//創建popupwindow对象
final PopupWindow pw = new PopupWindow(root, 1560, 1720);
Button bt = findViewById(R.id.button2);
bt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 以下拉的方式显示
pw.showAsDropDown(v);
//将popupwindow显示在指定的位置
pw.showAtLocation(findViewById(R.id.button2), Gravity.CENTER, 20, 20);
}
});
//获取popupwindow中关闭按钮
root.findViewById(R.id.close).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//关闭popupwindow
pw.dismiss();
}
});
}
}

<?xml version="1.0" encoding="utf-8"?>

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="560dp"
    android:src="@drawable/mia1" />

<Button
    android:id="@+id/close"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="关闭" />

<?xml version="1.0" encoding="utf-8"?>

<Button
    android:id="@+id/button2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="弹出popop窗口" />