Android直接跳转activity报错

Question

每次运行总是报错，能进入软件，但跳转时报错

 package com.text.Mark1;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;
import android.view.WindowManager;

public class welcome extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);//去掉标题栏
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                        WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏显示
        setContentView(R.layout.welcome2);

        new Handler().postDelayed(new Runnable(){

            @Override
            public void run(){
                Intent intent = new Intent (welcome.this,login.class);           
                startActivity(intent);           
                welcome.this.finish();
            }
        }, 1000);

    }
}

12-26 09:09:33.025: E/AndroidRuntime(555): FATAL EXCEPTION: main
12-26 09:09:33.025: E/AndroidRuntime(555): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.text.Mark1/com.text.Mark1.login}; have you declared this activity in your AndroidManifest.xml?
12-26 09:09:33.025: E/AndroidRuntime(555): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.app.Activity.startActivityForResult(Activity.java:3190)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.app.Activity.startActivity(Activity.java:3297)
12-26 09:09:33.025: E/AndroidRuntime(555): at com.text.Mark1.welcome$1.run(welcome.java:25)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.os.Handler.handleCallback(Handler.java:605)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.os.Handler.dispatchMessage(Handler.java:92)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.os.Looper.loop(Looper.java:137)
12-26 09:09:33.025: E/AndroidRuntime(555): at android.app.ActivityThread.main(ActivityThread.java:4340)
12-26 09:09:33.025: E/AndroidRuntime(555): at java.lang.reflect.Method.invokeNative(Native Method)
12-26 09:09:33.025: E/AndroidRuntime(555): at java.lang.reflect.Method.invoke(Method.java:511)
12-26 09:09:33.025: E/AndroidRuntime(555): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
12-26 09:09:33.025: E/AndroidRuntime(555): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
12-26 09:09:33.025: E/AndroidRuntime(555): at dalvik.system.NativeStart.main(Native Method)

Answer 1

have you declared this activity in your AndroidManifest.xml?

检查welcome,login这两个activity在清单文件里是否注册了。