android无法在选项菜单中启动主要活动

Question

Hi there basically i have created a options menu and have one of the menu items as the home button which essentially calls the home activity Main.java. I have used the code

startActivity(new Intent("org.me.myandroidstuff.Main"));

in a GetHome method. My problem is that when i run this the application crashes because it isnt handled. Now i know this generally means there is some error in the androidmanifest file however i think my coding is okay so im a bit stumped. Here is my androidmanifest.xml code

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.me.myandroidstuff"
    android:versionCode="1"
    android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" android:allowBackup="false">

**<activity
android:name=".Main"
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=".PetrolPriceActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="org.me.myandroidstuff.PetrolPriceActivity" />

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

<activity
android:name=".AreaURL"
android:label="@string/app_name" >
<intent-filter>
<action android:name="org.me.myandroidstuff.AreaURL" />

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

</application>

</manifest>

the part highlighted is the code for my main class. Im rather new to android so i imagine its a relatively simple fix but ive looked and i havent found a solution yet. Thanks

Answer 1

change the code to

startActivity(new Intent("android.intent.action.MAIN"));

In manifest file in action you have written

< action android:name="android.intent.action.MAIN" />

while calling the new Intent(String Action), you need to put the same action name.

or you can use different signature of constructor, change the code to

startActivity(new Intent(this, Main.class);

in place of "this" you can use the appropriate context.

Answer 2

使用startActivity(new Intent(getApplicationContext(), Main.class));