java代码:
package hello.acticity;import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;public class Activity05 extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView myTextView=(TextView)findViewById(R.id.myTextView);
Button myButton=(Button)findViewById(R.id.myButton);
}
}main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>根据视频教程,myTextView与myButton没有显示出来,用的是android2.2的emulator
知道的,哪位大虾帮忙一下,谢谢!
package hello.acticity;import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;public class Activity05 extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView myTextView=(TextView)findViewById(R.id.myTextView);
Button myButton=(Button)findViewById(R.id.myButton);
}
}main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>根据视频教程,myTextView与myButton没有显示出来,用的是android2.2的emulator
知道的,哪位大虾帮忙一下,谢谢!
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="hello.acticity"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Activity05"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity> </application>
</manifest>
这个文件没有修改
myButton.setText("Button");谢谢各位,确实把setText()加上就可以了