自定義Toast，從頂部掉下，然後再彈一下

先把自定義類贈上，如果您覺得有用，請贊！

import java.util.Timer;
import java.util.TimerTask;

import com.example.viewpageindicator.R;

import android.content.Context;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Toast;

public class MyToast {

    private LayoutParams mParams;
    private boolean mShowTime;
    private boolean mIsShow;
    private WindowManager mWdm;
    private View mToastView;
    private Timer mTimer;
    private MyToast(Context context, String text, boolean showTime ){
          mShowTime = showTime;//記錄Toast的顯示長短類型
          mIsShow = false;//記錄當前Toast的內容是否已經在顯示
          mWdm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
          //通過Toast實例獲取當前android系統的默認Toast的View佈局
          mToastView = Toast.makeText(context, text, Toast.LENGTH_SHORT).getView();
          mTimer = new Timer();
          //設置佈局參數
          setParams();
        }

    public static MyToast MakeText(Context context, String text, boolean showTime) {
        MyToast result = new MyToast(context, text, showTime);
        return result;
    }
    private void setParams() {
        // TODO Auto-generated method stub
         mParams = new WindowManager.LayoutParams();
          mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;  
          mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;  
          mParams.format = PixelFormat.TRANSLUCENT;  
          mParams.windowAnimations = R.style.anim_view;//設置進入退出動畫效果
          mParams.type = WindowManager.LayoutParams.TYPE_TOAST;  
          mParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON  
              | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE  
              | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
          mParams.gravity = Gravity.CENTER_HORIZONTAL|Gravity.BOTTOM;
          mParams.y = 200;
    }
    public void show(){
          if(!mIsShow){//如果Toast沒有顯示，則開始加載顯示
            mIsShow = true;
            mWdm.addView(mToastView, mParams);//將其加載到windowManager上
            mTimer.schedule(new TimerTask() {
              @Override
              public void run() {
                mWdm.removeView(mToastView);
                mIsShow = false;
              }
            }, (long)(mShowTime ? 3500 : 2000));
          }
        }
}

動畫xml anim_view

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="anim_view">
        <item name="@android:windowEnterAnimation">@anim/anim_in</item>
        <item name="@android:windowExitAnimation">@anim/anim_out</item>
    </style>
</resources>

anim_in 動畫xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:toXDelta="0"
    android:toYDelta="100"
    android:duration="100"
    />
  <translate
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:toXDelta="0"
    android:toYDelta="-200"
    android:duration="150"
    android:fillAfter="true"
    android:interpolator="@android:anim/decelerate_interpolator"
    />
    <translate
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:toXDelta="0"
    android:toYDelta="200"
    android:duration="100"
    />
      <translate
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:toXDelta="0"
    android:toYDelta="-100"
    android:duration="150"
    android:fillAfter="true"
    android:interpolator="@android:anim/decelerate_interpolator"
    />
  <alpha 
    android:fromAlpha="0"
    android:toAlpha="1"
    android:duration="150"
    />

</set>

anim_out 動畫xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha 
        android:fromAlpha="1"
        android:toAlpha="0"
        android:duration="800"/>
</set>

淡出界面！

調用方法 第三個參數爲true和false true則3500毫秒false則2000毫秒