我正试图用我的主要活动打开我的课程Speak2:
Intent i = new Intent("R.voice.Speak2");
startActivity(i);
这是第一项活动的完整代码:
public class recon extends Activity implements OnClickListener {
ListView lv;
static final int check = 2000;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.voice);
lv = (ListView) findViewById(R.id.lvVoiceReturn);
Button b = (Button) findViewById(R.id.bVoice);
b.setOnClickListener(this);
}
public void onClick(View v) {
Intent i = new Intent(recon.this, Speak2.class);
startActivity(i);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
}
}
我的程序很简单。该按钮出现在voice.xml布局中,按下后会启动类活动Speak2。为什么第二个活动从未显示过?
答案 0 :(得分:4)
尝试这种方式并确保Activity Speak2
中也定义了AndroidManifest.xml
,否则您将获得例外。
// MainActivity is your main activity
Intent i = new Intent(MainActivity.this, Speak2.class);
startActivity(i);
<application>
中的AndroidManifest.xml
标记应如下所示:
<application android:icon="@drawable/ic_launcher" android:label="@string/app_name" >
<activity android:label="@string/app_name" android:name="recon" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="Speak2" />
</application>