小菜请教个问题，eoeandroid上没解决

XueSeCaiHong 2012-09-22 07:31:54

刚刚接手安卓，环境搭建完了之后，按照书上新建的helloword程序，但是在运行的时候，虚拟机光能调用，不显示“helloworld”。下面错误提示是。在网上找了好多答案，包括删除R.java文件，重启程序，删除buildpath的库文件。。。都解决不了问题。请高手们帮忙回答一下吧。
程序如下：
package helloword.a;

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

public class HellowordActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv = new TextView(this);
tv.setText("Hello World");
setContentView(tv);
}
}

Console显示：
[2012-09-21 18:52:08 - helloword] ------------------------------
[2012-09-21 18:52:08 - helloword] Android Launch!
[2012-09-21 18:52:08 - helloword] adb is running normally.
[2012-09-21 18:52:08 - helloword] Performing helloword.a.HellowordActivity activity launch
[2012-09-21 18:52:08 - helloword] Automatic Target Mode: Preferred AVD '2.3.1' is not available. Launching new emulator.
[2012-09-21 18:52:08 - helloword] Launching a new emulator with Virtual Device '2.3.1'
[2012-09-21 18:52:10 - helloword] New emulator found: emulator-5554
[2012-09-21 18:52:10 - helloword] Waiting for HOME ('android.process.acore') to be launched...
[2012-09-21 18:52:53 - helloword] HOME is up on device 'emulator-5554'
[2012-09-21 18:52:53 - helloword] Uploading helloword.apk onto device 'emulator-5554'
[2012-09-21 18:52:53 - helloword] Installing helloword.apk...
[2012-09-21 18:53:26 - helloword] Installation failed due to invalid APK file!
[2012-09-21 18:53:26 - helloword] Please check logcat output for more details.
[2012-09-21 18:53:26 - helloword] Launch canceled!

因为没有基础，希望回答的能详细点。谢谢

...全文

212 6 打赏收藏转发到动态举报

写回复

用AI写文章

6 条回复

切换为时间正序

请发表友善的回复…

发表回复

小强1002 2012-09-24

打赏
举报

看下应该是没问题的，运行了下也是对的
但是楼主：
"
setContentView(R.layout.main);
TextView tv = new TextView(this);
tv.setText("Hello World");
setContentView(tv);
"
这个写法是没错，建议不要这么搞养成好习惯么

XueSeCaiHong 2012-09-24