Question

我对Android很新，我遇到了问题。我一直在找到No Activity来处理Intent错误。我试图通过点击按钮开始一项新活动。

我查看了所有其他答案，他们或者对问题非常具体，答案不适用于我的问题，或者是为了确保活动名称匹配，我的确如此。

清单

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.madonk.louisiana.festivals"
    android:installLocation="auto"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">

        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>        
         </activity>

        <activity
            android:name=".Southwest"
            android:label="@string/title_activity_southwest" >

        </activity>

    </application>

</manifest>

MainActivity

package com.madonk.louisiana.festivals;

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

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

  Button southwest = (Button) findViewById(R.id.button_southwest);
  southwest.setOnClickListener(new View.OnClickListener() {

      public void onClick(View v) {
          // TODO Auto-generated method stub
          startActivity(new Intent());            }       });
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
} }

logcat的

    07-22 21:08:35.179: E/AndroidRuntime(470): FATAL EXCEPTION: main
07-22 21:08:35.179: E/AndroidRuntime(470): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=.Southwest }
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1409)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1379)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.app.Activity.startActivityForResult(Activity.java:2827)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.app.Activity.startActivity(Activity.java:2933)
07-22 21:08:35.179: E/AndroidRuntime(470):  at com.madonk.louisiana.festivals.MainActivity$1.onClick(MainActivity.java:22)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.view.View.performClick(View.java:2485)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.view.View$PerformClick.run(View.java:9080)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.os.Handler.handleCallback(Handler.java:587)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.os.Handler.dispatchMessage(Handler.java:92)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.os.Looper.loop(Looper.java:123)
07-22 21:08:35.179: E/AndroidRuntime(470):  at android.app.ActivityThread.main(ActivityThread.java:3683)
07-22 21:08:35.179: E/AndroidRuntime(470):  at java.lang.reflect.Method.invokeNative(Native Method)
07-22 21:08:35.179: E/AndroidRuntime(470):  at java.lang.reflect.Method.invoke(Method.java:507)
07-22 21:08:35.179: E/AndroidRuntime(470):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
07-22 21:08:35.179: E/AndroidRuntime(470):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-22 21:08:35.179: E/AndroidRuntime(470):  at dalvik.system.NativeStart.main(Native Method)

Answer 1

您没有显示启动活动的源代码。根据LogCat输出，我的猜测是你正在尝试：

startActivity(new Intent(".Southwest"));

相反，请使用：

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

Answer 2

您尚未发布任何代码，但我假设您在启动西南活动时可能正在创建Intent这样的代码：

Intent intent = new Intent(".Southwest");

这会创建一个Intent，其中ACTION =“。Southwest”。您想要启动一个特定的类，因此您需要创建一个明确的Intent，如下所示：

Intent intent = new Intent(this, Southwest.class);

这将为特定类创建Intent。

Answer 3

张贴在这里帮助其他人偶然发现了这个

代码应该是

startActivity(new Intent(MainActivity.this, Southwest.class));

找不到处理Intent的活动{act = .Southwest}

3 个答案: