android - 固定无法找到明确的 Activity 类恼人的错误

Question

我对这个异常做了一些研究，但这里的这些答案都没有帮助我。所以我需要做的是，当我单击一个列表项时，它会移动到另一个 Activity ，但我最终会遇到同样烦人的异常。它告诉我们查看 Android Manifest 文件，但那里一切正常!

这是我的代码

Intent :

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
    String strItemTextView = mForecastAdapter.getItem(position);
    Intent intent = new Intent(getActivity(), DetailActivity.class);
    intent.putExtra(Intent.EXTRA_TEXT, strItemTextView);
    startActivity(intent);
}

Android list 文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.android.sunshine2">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name="com.example.android.sunshine2.MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.android.sunshine2.DetailActivity"
            android:label="@string/title_activity_detail"
            android:parentActivityName="com.example.android.sunshine2.MainActivity"
            android:theme="@style/AppTheme.NoActionBar">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.example.android.sunshine2.MainActivity" />
        </activity>
    </application>

</manifest>

更新:

这是我的 DetailActivity 代码:

package com.example.android.sunshine2;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

public class DetailActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detail);
        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.detail, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {

            View rootView = inflater.inflate(R.layout.fragment_detail, container, false);
            return rootView;
        }
    }
}

我遇到这样的异常:

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.android.sunshine2/com.example.android.sunshine2.DetailActivity}; have you declared this activity in your AndroidManifest.xml?

它指向这行代码:

intent.putExtra(Intent.EXTRA_TEXT, strItemTextView);

更新#2:

现在事情变得很奇怪。如果我对 Activity 名称使用相对路径，但为父 Activity 名称保留完整路径( list 文件的代码 fragment ):

<activity
        android:name=".DetailActivity" // <!--Activity I wanna go to (relative path)-->
        android:label="@string/title_activity_detail"
        android:parentActivityName="com.example.android.sunshine2.MainActivity"
        android:theme="@style/AppTheme.NoActionBar">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.example.android.sunshine2.MainActivity" /><!--Full path-->
    </activity>

我得到同样的异常，但这次它指向这行代码:

startActivity(intent);

更新 #3: 请查看我设法解决问题的评论

Answer 1

您的 list 中已经有一个已声明的包:

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.android.sunshine2">

据我所知，您应该仅使用相对路径在 list 中声明您的 Activity :

<activity
    android:name=".DetailActivity"
    android:label="@string/title_activity_detail"
    android:parentActivityName=".MainActivity"
    android:theme="@style/AppTheme.NoActionBar">
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value="com.example.android.sunshine2.MainActivity" />
        </activity>