[移动开发][安卓] 实现悬浮通知效果

?先上效果图：

前言：

最近想搞一个通知提示，但是由于使用场景限制，最后决定使用Toast来实现通知的提示。虽然Toast可以进行自定义，但是还是达不到自己想要的效果。最后翻来覆去终于找到了解决方法，特此献上！

代码里有一块操作比较骚，通过反射的方式来获取到了Toast的WindowManager，思来想去，佩服了！

源码：

package xx.xx.xx;

import android.annotation.SuppressLint;
import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.TextView;
import android.widget.Toast;
import com.starnet.stbsystemservice.R;
import java.lang.reflect.Field;


public class PushToast {
    private final Context mContext;
    private Toast mToast;

    public PushToast(Context context) {
        mContext = context;
    }

    public void createToast(String title, String content) {
        if (mContext == null) {
            return;
        }

        LayoutInflater inflater = LayoutInflater.from(mContext);
        @SuppressLint("InflateParams") View view = inflater.inflate(R.layout.view_push_toast, null);
        TextView tvTitle = (TextView) view.findViewById(R.id.tv_title);
        TextView tvContent = (TextView) view.findViewById(R.id.tv_content);
        tvTitle.setText(title);
        tvContent.setText(content);
        mToast = new Toast(mContext);
        mToast.setView(view);
        mToast.setDuration(Toast.LENGTH_LONG);
        mToast.setGravity(Gravity.TOP, 0, 0);
        initLayoutParams();
    }

    public void show(){
        mToast.show();
    }

    private void initLayoutParams() {
        try {
            Object mTN;
            mTN = getField(mToast, "mTN");
            if (mTN != null) {
                Object mParams = getField(mTN, "mParams");
                if (mParams instanceof WindowManager.LayoutParams) {
                    WindowManager.LayoutParams params = (WindowManager.LayoutParams) mParams;

                    params.width = WindowManager.LayoutParams.MATCH_PARENT;
                    params.height = WindowManager.LayoutParams.WRAP_CONTENT;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static Object getField(Object object, String fieldName)
            throws NoSuchFieldException, IllegalAccessException {
        Field field = object.getClass().getDeclaredField(fieldName);
        if (field != null) {
            field.setAccessible(true);
            return field.get(object);
        }
        return null;
    }
}

?布局文件：

<?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="wrap_content"
    android:orientation="vertical">
    <LinearLayout
        android:layout_marginTop="20dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:id="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@color/white"
            android:background="#4169E1"
            android:textStyle="bold"
            android:textSize="24sp" />
        <TextView
            android:id="@+id/tv_content"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#000"
            android:background="#fff"
            android:textSize="24sp"/>
    </LinearLayout>
</LinearLayout>

使用方法：

        PushToast mToast = new PushToast(context);
        mToast.createToast("通知: ","您的画质已经是最佳状态!");
        mToast.show();

?参考链接：

https://www.jb51.net/article/148988.htmhttps://www.jb51.net/article/148988.htm