Popupwindow的简单使用

本文简单地介绍Popupwindow的使用方法

public class MainActivity extends AppCompatActivity {
PopupWindow popupWindow;//初始化定义Popupwindow
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //通过点击事件触发popupwindow
        ( findViewById(R.id.button)).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //popupwindow显示
                popupWindow.showAsDropDown(view);
            }
        });
        //以view将view_layout中的布局和activity_main布局进行桥接
        View view = LayoutInflater.from(this).inflate(R.layout.view_layout,null);
        //配置view_layout中的文本
        ((TextView)view.findViewById(R.id.textView)).setText("提示");
        ((TextView)view.findViewById(R.id.textView2)).setText("popwindow测试");
        //对view中的按钮进行点击事件配置
        view.findViewById(R.id.button1).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"click no",Toast.LENGTH_SHORT).show();
                popupWindow.dismiss();
            }
        });
        view.findViewById(R.id.button2).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"click yes",Toast.LENGTH_SHORT).show();
                popupWindow.dismiss();
            }
        });
         popupWindow= new PopupWindow(view, WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT);
         popupWindow.setBackgroundDrawable(new BitmapDrawable());
         popupWindow.setFocusable(true);//点击框外可以使得popupwindow消失
    }
}

下面是view_layout的布局配置文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="#bbbb"
    android:orientation="vertical"
    android:layout_gravity="center">

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="取消" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="确定" />
    </LinearLayout>
</LinearLayout>