Caused by: android.view.WindowManager$BadTokenException

liu

       在使用Popupwindow时可能会报这个错，例如在一个Activity中的onCreate()方法中直接显示Popupwindow，这是因为popwindow必须依附于某一个view，而在oncreate中view还没有加载完毕，必须要等activity的生命周期函数全部执行完毕，需要依附的view加载好后才可以执行popwindow

解决方法：

[Java] 纯文本查看 复制代码

//layout是根标签的id
        findViewById(R.id.layout).post(new Runnable() {
            @Override
            public void run() {
                popupWindow.showAtLocation(getWindow().getDecorView(), Gravity.CENTER, 0, 0);
            }
        });

完整代码：


activity_main.xml：

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    tools:context="com.company.helloworld.test.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

layout_popwindow.xml：

[XML] 纯文本查看 复制代码

<?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="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="20dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/white"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="match_parent"
            android:layout_height="45dp"
            android:gravity="center"
            android:text="提示"
            android:textColor="@android:color/black"
            android:textSize="16sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/tv_sign"
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:layout_marginBottom="15dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:gravity="center"
            android:text="是否退出？"
            android:textColor="@android:color/black"
            android:textSize="16sp" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="#F5F5F5" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/tv_cancle"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:gravity="center"
                android:text="取消"
                android:textColor="@android:color/holo_blue_light"
                android:textSize="16sp" />

            <View
                android:layout_width="0.5dp"
                android:layout_height="match_parent"
                android:background="#E8E8E8" />

            <TextView
                android:id="@+id/tv_confirm"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:gravity="center"
                android:text="确认"
                android:textColor="@android:color/holo_blue_light"
                android:textSize="16sp" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

MainActivity:

[Java] 纯文本查看 复制代码

import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private Button mButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        show();
    }

    public void show() {
        LayoutInflater layoutInflater = LayoutInflater.from(this);
        View contentView = layoutInflater.inflate(R.layout.layout_popwindow, null);
        final PopupWindow popupWindow = new PopupWindow(contentView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
        TextView tv_cancle = contentView.findViewById(R.id.tv_cancle);
        tv_cancle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                popupWindow.dismiss();
            }
        });
        TextView tv_confirm = contentView.findViewById(R.id.tv_confirm);
        tv_confirm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "你点击了确认", Toast.LENGTH_SHORT).show();
                popupWindow.dismiss();
            }
        });
        popupWindow.setTouchable(true);
        popupWindow.setOutsideTouchable(true);
        popupWindow.setBackgroundDrawable(new BitmapDrawable(
                getResources(), (Bitmap) null));
        popupWindow.setFocusable(true);
        //在PopupWindow里面就加上下面代码，让键盘弹出时，不会挡住pop窗口。
        popupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
        popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        //添加pop窗口关闭事件
        popupWindow.setOnDismissListener(new poponDismissListener());
        backgroundAlpha(0.4f);
        //layout是根标签的id
        findViewById(R.id.layout).post(new Runnable() {
            @Override
            public void run() {
                popupWindow.showAtLocation(getWindow().getDecorView(), Gravity.CENTER, 0, 0);
            }
        });
    }

    /**
     * 设置添加屏幕的背景透明度0.0-1.0 越小越不透明 越黑
     *
     * @param bgAlpha
     */
    public void backgroundAlpha(float bgAlpha) {
        WindowManager.LayoutParams lp = getWindow().getAttributes();
        lp.alpha = bgAlpha; //0.0-1.0
        getWindow().setAttributes(lp);
    }

    class poponDismissListener implements PopupWindow.OnDismissListener {

        @Override
        public void onDismiss() {
            // TODO Auto-generated method stub
            //Log.v("List_noteTypeActivity:", "我是关闭事件");
            backgroundAlpha(1f);
        }

    }
}

站长苏飞

我只是路过打酱油的。

竹林风

感恩无私的分享与奉献

范范

我只是路过打酱油的。

惜

强烈支持楼主ing……

Amy

看到这帖子真是高兴！