仿IOS Launch 欢迎界面

Activity 界面:

welcome_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"
    android:orientation="vertical"
    android:background="@drawable/welcome_pic"
    >
    
</LinearLayout>

Activity 代码:

package com.activity;

import android.annotation.SuppressLint;
import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

import com.tqg.zhenjiang.price.R;

@SuppressLint("HandlerLeak")
public class WelcomeActivity extends Activity  {

    //延迟时间
    private final static int DELAY_TIME = 1500;
    //消息参数
    private final static int DELAY_MSG = 1001;
    
    @SuppressLint("HandlerLeak")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.welcome_layout);
        //延迟发送消息
        mHandler.sendEmptyMessageDelayed(DELAY_MSG, DELAY_TIME);
    }

    private final Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case DELAY_MSG:
                startToMainActivity();
                WelcomeActivity.this.finish();
                break;
            default:
                break;
            }
            super.handleMessage(msg);
        }
    };

    //跳转主界面
    private void startToMainActivity() 
    {
        Intent intent = new Intent();
        intent.setClass(this, MainActivity.class);
        startActivity(intent);
    }

}

主要就是运用了Android Handler延迟发送消息的机制。