仿IOS Launch 歡迎介面

Activity 介面:

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 代碼:

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  {    //延遲時間    private final static int DELAY_TIME = 1500;    //訊息參數    private final static int DELAY_MSG = 1001;        @SuppressLint("HandlerLeak")    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.welcome_layout);        //延遲發送訊息        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);        }    };    //跳轉主介面    private void startToMainActivity()     {        Intent intent = new Intent();        intent.setClass(this, MainActivity.class);        startActivity(intent);    }}

主要就是運用了Android Handler延遲發送訊息的機制。