Android Toast效果

Android Toast效果是一种提醒方式，在程序中使用一些短小的信息通知用户，过一会儿会自动消失，实现如下：

FirstActivity.java

package org.elvalad.activitytest;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.Window;

import android.widget.Button;

import android.widget.Toast;

/**

 * Created by elvalad on 2015/3/26.

 */

public class FirstActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        /* 隐藏标题栏 */

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.first_layout);

        /* 在Activity中使用Toast */

        Button button1 = (Button) findViewById(R.id.button_1);

        button1.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Toast.makeText(FirstActivity.this, "you click button 1",

                        Toast.LENGTH_SHORT).show();

            }

        });

    }

}

AndroidMainfest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="org.elvalad.activitytest">

    <application android:allowBackup="true" android:label="@string/app_name"

        android:icon="@mipmap/ic_launcher" android:theme="@style/AppTheme">

        <activity android:name=".FirstActivity"

            android:label="This is first activity" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

first_layout.xml

<?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">

    <Button

        android:id="@+id/button_1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Button1" />

</LinearLayout>