清单正确时，找不到用于处理Intent的活动 [英] No Activity found to handle Intent when the manifest is correct

问题描述

我已经处理了一个小时，我无法弄清楚这个问题.当ACTION_UP TouchEvent中的boolean值为true时，我试图启动一个新的activity.

I have been going over this for an hour and I cannot figure out the issue. I am trying to launch a new activity when a boolean value is true inside the ACTION_UP TouchEvent.

public boolean onTouchEvent(MotionEvent event) {

            int eventaction = event.getAction();
            int X = (int)event.getX();
            int Y = (int)event.getY();
            fingerX = X;
            fingerY = Y;

            switch (eventaction ) {

            case MotionEvent.ACTION_DOWN:
                if (okayButton){
                    if (fingerX > 323 && fingerX < 423) {
                        largeOkayButton = true;
                    }
                }
                break;

            case MotionEvent.ACTION_MOVE:
                break;

            case MotionEvent.ACTION_UP:
                tutorial = true;
                if (startActivity){
                    //create an Intent variable titled openStartingPoint and pass its activity action from the Android Manifest.xml
                    Intent MainActivity = new Intent("com.example.shoottoiletpaper.MAINACTIVITY");
                    //start a new activity by passing the newly created Intent

                    startActivity(MainActivity);
                }
                break;
            }
        return true;
    }

一切正常，直到启动activity为止，当它强制关闭时，我会在logcat中找到它:

Everything works until it gets to launching the activity, when it force closes and I get this in the logcat:

android.content.ActivityNotFoundException: No Activity found to handle Intent

这是manifest的相关部分:

        <activity
        android:name="com.example.shoottoiletpaper.MainActivity"
        android:screenOrientation="landscape"
        android:configChanges="orientation|keyboard"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAINACTIVITY" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

有什么想法吗?

推荐答案

更改此内容

Intent MainActivity = new Intent("com.example.shoottoiletpaper.MAINACTIVITY");

到

Intent MainActivity = new Intent("android.intent.action.MAINACTIVITY");

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