When trying to run the hello android test app i get an error APPCRASH and the emulator will not open

here is the full error Problem signature: Problem Event Name: APPCRASH Application Name: emulator.exe Application Version: 0.0.0.0 开发者_运维百科Application Timestamp: 4c79ab54 Fault Module Name: ntdll.dll Fault Module Version: 6.1.7600.16559 Fault Module Timestamp: 4ba9b21e Exception Code: c0000005 Exception Offset: 0005a6f0 OS Version: 6.1.7600.2.0.0.768.11 Locale ID: 1033 Additional Information 1: 0a9e Additional Information 2: 0a9e372d3b4ad19135b953a78882e789 Additional Information 3: 0a9e Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

here is the full src .java code

package com.example.helloandroid;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class HelloAndroid extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

     TextView tv = new TextView(this);
     tv.setText("Hello, Android");
     setContentView(tv);


     //setContentView(R.layout.main);
 }
 }

i am running in eclipse gallileo for the 2.0 sdk, though i have tried others

Did you state an SDK Version in your Manifest?

Are you selecting 'Android Application' after pressing Run?

You did everything listed here: http://developer.android.com/sdk/installing.html when installing the SDK?