Android自定義類似于QQ的消息提示框

效果還不錯，整體上是Translate動畫和FrameLayout布局的結合，下面看一下代碼:

activiy_main.xml

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android&quot;
   xmlns:tools="http://schemas.android.com/tools&quot;
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical" >


<FrameLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content" >

    <TextView
       android:id="@+id/toast"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_gravity="center"
       android:layout_marginBottom="20dp"
       android:layout_marginTop="40dp"
       android:background="@color/transparent_black"
       android:gravity="center"
       android:paddingBottom="5dp"
       android:paddingLeft="40dp"
       android:paddingRight="40dp"
       android:paddingTop="5dp"
       android:text="@string/toast"
       android:textColor="@color/white"
       android:textSize="16sp"
       android:visibility="invisible" />

    <TextView
       android:id="@+id/title"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@color/blue"
       android:gravity="center"
       android:padding="5dp"
       android:text="@string/title"
       android:textColor="@color/white"
       android:textSize="20sp" />
</FrameLayout>

<TextView
   android:id="@+id/info"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:layout_marginTop="10dp"
   android:gravity="center"
   android:text="@string/hello_world" />

<Button
   android:id="@+id/btn"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:layout_marginTop="30dp"
   android:gravity="center"
   android:text="@string/btn" >
</Button>


</LinearLayout></pre> 


  MainActivity.java 

 package cn.androiddevelop;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.TextView;
import cn.androiddevelop.test.R;
public class MainActivity extends Activity {
    TextView rootView;
    Button btn;
    Handler handler;
    TextView tv;
    Animation mTranslateInAnimation, mTranslateOutAnimation;
    boolean flag = true;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    rootView = (TextView) findViewById(R.id.info);
    btn = (Button) findViewById(R.id.btn);
    tv = (TextView) findViewById(R.id.toast);

    handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            tv.startAnimation(mTranslateOutAnimation);
            tv.setGravity(View.INVISIBLE);
            super.handleMessage(msg);
        }

    };

    // 定義進入與退出動畫
    mTranslateInAnimation = new TranslateAnimation(
            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0,
            Animation.RELATIVE_TO_SELF, -1.5f, Animation.RELATIVE_TO_SELF,
            0);
    mTranslateInAnimation.setDuration(1000);

    mTranslateOutAnimation = new TranslateAnimation(
            Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0,
            Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF,
            -1.5f);
    mTranslateOutAnimation.setDuration(1000);

    mTranslateOutAnimation // 動畫顯示結束后將tv控件隱藏
            .setAnimationListener(new Animation.AnimationListener() {
                @Override
                public void onAnimationStart(Animation animation) {
                }

                @Override
                public void onAnimationEnd(Animation animation) {
                    tv.setVisibility(View.INVISIBLE);
                    flag = true; // 恢復響應
                }

                @Override
                public void onAnimationRepeat(Animation animation) {
                }
            });

    btn.setOnClickListener(new Button.OnClickListener() {

        @Override
        public void onClick(View v) {
            if (flag) { // 第一次點擊按鈕生效，在消息框退出前不響應點擊
                flag = false;
            } else {
                return;
            }

            // 顯示消息框
            tv.startAnimation(mTranslateInAnimation);
            tv.setVisibility(View.VISIBLE);

            new Thread() {
                @Override
                public void run() {
                    try {
                        sleep(3000);
                        handler.sendEmptyMessage(0);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }.start();
        }
    });
}

}</pre>