入门Android基础--延时任务

《入门Android基础--延时任务之Timer》

一张图片的欢迎界面，延时2S进入主界面：

WelcomeActivity.java

public class WelcomeActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);
        final Intent it = new Intent(this, MainActivity.class); 
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                startActivity(it);
                finish();
            }
        };
        timer.schedule(task, 1000 * 2); 
    }
}

activity_welcome.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/welcome"/>
</LinearLayout>