Android : No Launcher activity found!

[2011-12-09 15:02:58 - HQTDvr] Android Launch!
[2011-12-09 15:02:58 - HQTDvr] adb is running normally.
[2011-12-09 15:02:58 - HQTDvr] No Launcher activity found!
[2011-12-09 15:02:58 - HQTDvr] The launch will only sync the application package on the device!
[2011-12-09 15:02:58 - HQTDvr] Performing sync
[2011-12-09 15:02:58 - HQTDvr] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'Android-2.2'

突然調試不了了，開始以為是模擬器出錯了。用手機也還是一樣。重啟了系統也不行，很鬱悶著。

後來再仔細一看 no activity found ，應該是沒有找到啟動的Activity，再查看應用程式設定檔，原來是兩個 </activity> 跑到一塊了，一不小心引起的。。

 

        <activity
            android:label="@string/app_name"
            android:name=".demo.FormMain" >

這個地方的被我不小心移到後面去了。
        <activity android:name=".demo.FormVideo">
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        </activity>