菜鸟请教，关于eclipse中从一个activity跳转到另一个activity运行unfortunately activity has stopped时提示
其中一个activity代码如下：
package mares.activity02;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;
public class Activity02Activity 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);
myTextView.setText("我的第一个TextView");
myButton.setText("我的第一个Button");
myButton.setOnClickListener((android.view.View.OnClickListener) new MyButtonListener());
}
class MyButtonListener implements OnClickListener{
public void onClick(View v){
Intent intent = new Intent();
intent.setClass(Activity02Activity.this, otherActivity.class);
Activity02Activity.this.startActivity(intent);
}
}
}
另一个otheractivity代码如下：
package mares.activity02;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class otherActivity extends Activity{
private TextView myTextView=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.other);
TextView myTextView= (TextView)findViewById(R.id.myTextView);
myTextView.setText(R.string.other);
}
public TextView getMyTextView() {
return myTextView;
}
public void setMyTextView(TextView myTextView) {
this.myTextView = myTextView;
}
}
main.xml代码如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
other.xml代码如下：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_wi
dth="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
strings.xml代码如下：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, Activity02Activity!</string>
<string name="app_name">Activity02</string>
<string name="other">otherActivity</string>
</resources>
androidmanifest.xml代码如下：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="mares.activity02"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".Activity02Activity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".otherActivity" android:label="@string/other"/>
</application>
</manifest>
运行后截图如下：
希望高手帮忙解决
[解决办法]
那是因为你没有正确import导入包，解决办法：
在顶部import android.os.Bundle;后面加上
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
然后
myButton.setOnClickListener((android.view.View.OnClickListener) new MyButtonListener());
这一行，改为
myButton.setOnClickListener(new MyButtonListener());
