仿IOS Launch 欢迎界面
16lz
2021-01-23
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。
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