Android 菜鸟问题？？？？？？？？？？？？？？？

Question

想用Intent启动另一个Activity却总是报ActivityNotFoundException代码如下

 

  Test.java

 

package com.comp;



import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Test extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button btn = (Button)findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction("testAction");
                startActivity(intent);
            }
        });
    }
}

 

Test2.java

 

package com.comp;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Test2 extends Activity{
    
    
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView tx = new TextView(this);
        tx.setText("Test2");
        setContentView(tx);
    }

}

 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.comp"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Test"
                  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=".Test2">
            <intent-filter>
                <action android:name="testAction"></action>
                <category android:name="testCategory"></category>
            </intent-filter>
        </activity>
    </application>
    <uses-sdk android:minSdkVersion="7" />

</manifest> 

 

 

Answer 1

不行你就这么设置
[code="xml"][/code]
分类Category，一般不要去在Intent中设置它，如果你写Intent的接收者，就在Manifest.xml的Activity的IntentFilter中包含android.category.DEFAULT,这样所有不设置Category（Intent.addCategory(String c);）的Intent都会与这个Category匹配。