Question

制作启动画面时遇到一些问题。它开始很好但后来进入下一个活动并在定时动画后崩溃。这是我的代码：

public class SplashScreen extends Activity {
final static int DURATION = 2000;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.splash);
}

@Override
protected void onResume() {
    super.onResume();
    splashWelcome(DURATION);
}

//Run the splash screen for given time limit
protected void splashWelcome(final int limit) {
    Thread splashThread = new Thread() {
        @Override
        public void run() {
            try {
                int waited = 0;
                while (waited < limit) {
                    sleep(100);
                    waited += 100;
                }
            } catch (InterruptedException e) {
                Log.d("SplashScreen Error:", e.getMessage().toString());
            } finally {
                Intent i = new Intent(getApplicationContext(), Main.class);
                startActivity(i);
                finish();   
            }

        } 
    };
    splashThread.start();
}

}

这是错误：

01-10 12:23:57.835: ERROR/AndroidRuntime(19092): FATAL EXCEPTION: Thread-10
01-10 12:23:57.835: ERROR/AndroidRuntime(19092): java.lang.NullPointerException
01-10 12:23:57.835: ERROR/AndroidRuntime(19092):     at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:100)
01-10 12:23:57.835: ERROR/AndroidRuntime(19092):     at com.fab.quotes.SplashScreen$1.run(SplashScreen.java:36)
01-10 12:23:57.835: WARN/ActivityManager(114):   Force finishing activity com.fab.quotes/.Main

Answer 1

尝试使用

Intent i = new Intent(SplashScreen.this, Main.class);

Answer 2

你在线程中调用getApplicationContext()。

尝试更换：

Intent i = new Intent(getApplicationContext(), Main.class);

使用：

Intent i = new Intent(SplashScreen.this, Main.class);

飞溅屏幕崩溃

2 个答案: