Android应用欢迎界面实现_welcomeactivity extends appcompatactivity-优快云博客

本文链接：https://blog.youkuaiyun.com/heyangweng/article/details/81843231

本文介绍了一个简单的Android应用案例，通过使用Handler和Runnable实现欢迎页面的自动跳转到主活动。代码中设置了欢迎页为全屏显示，并在5秒后自动启动主活动并关闭自己。

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public class WelcomeActivity extends AppCompatActivity {

    private static final String TAG ="WelcomeActivity" ;
    private Handler handler;
    private Runnable runnable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //设置为全屏模式
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_welcome);
        handler = new Handler();
        runnable = new Runnable() {
            @Override
            public void run() {
               startActivity(new Intent(WelcomeActivity.this,MainActivity.class));
               finish();
            }
        };
        handler.postDelayed(runnable,5000);

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        handler.removeCallbacks(runnable);
        Log.i(TAG,"移除runable");
    }
}

布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".WelcomeActivity">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/white"
        android:layout_centerInParent="true"
        android:scaleType="center"
        android:src="@mipmap/mes"/>

</RelativeLayout>