Question

我遇到了在启动画面后加载新意图的问题。我已经查看了与此例外相关的问题，但他们似乎都在处理谷歌游戏或谷歌地图未被正确引用的事情，这对我来说并非如此。

这些是我看过的相关问题

以下是我的清单代码

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

    <uses-sdk android:minSdkVersion="15" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".Splash"
            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=".HomePage"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.HOMEPAGE" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".OrderPlaced"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.ORDERPLACED" />

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

</manifest>

以下是类splash的代码

package com.android.main;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class Splash extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);

        Thread timer = new Thread(){
            public void run(){
                try{
                    sleep(1000);
                }catch(InterruptedException e) {
                    e.printStackTrace();
                }finally{
                    Intent openStartingPoint = new Intent("com.android.main.HOMEPAGE");
                    startActivity(openStartingPoint);
                }
            }
        };
        timer.start();
    }

    @Override
    protected void onPause() {

        super.onPause();
        finish();
    }


}

这是我试图在启动画面后加载的类HomePage

package com.android.main;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;

public class HomePage extends Activity {
    /** Called when the activity is first created. */


    TextView name;
    EditText editName;
    TextView drinks;
    Spinner drinksSpinner;
    TextView message;
    CheckBox checkbox;
    Button createOrderButton;


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

    public void createOrder(){

        createOrderButton = (Button) findViewById(R.id.bCreateOrder);
        createOrderButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                postInformationtoAPI();

            }

            private void postInformationtoAPI() {

                goToOrderCompleted();
            }

            private void goToOrderCompleted() {
                Intent intent = new Intent(HomePage.this , OrderPlaced.class);
                HomePage.this.startActivity(intent);
                Log.i("onClick", "trying to start new activity to change layout");
            }
        });

    }
}

加载启动画面后，app force退出，并提供以下异常

03-14 22:32:33.553: E/AndroidRuntime(3166): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.android.main.HOMEPAGE }

非常感谢任何帮助

Answer 1

你必须区分Intent的构造函数，

 Intent openStartingPoint = new Intent("com.android.main.HOMEPAGE");

假设com.android.main.HOMEPAGE为意图的操作过滤器。这在您的应用程序的android manifest.xml文件中不可用。

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

应该是，

<action android:name="com.android.main.HOMEPAGE" />

或只需更改，

Intent openStartingPoint = new Intent(Splash.this, HOMEPAGE.class);

Answer 2

        <activity
        android:label="@string/app_name"
        android:name=".SplashScreen"
        android:screenOrientation="landscape"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <intent-filter >
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.android.main.HOMEPAGE"
        android:screenOrientation="landscape"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <intent-filter >
            <action android:name="com.android.main.HOMEPAGE" />

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

此外，我还有一个计时器任务来显示启动画面

public class SplashScreen extends Activity{

Timer splashTimer;
SplashTimerHandler splashTimerHandler;

private boolean applicationPaused=false;

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    requestWindowFeature(Window.FEATURE_NO_TITLE);

    setContentView(R.layout.main);

    this.setSplash();


}

private void setSplash() 
{
    this.splashTimerHandler=new SplashTimerHandler();
    this.splashTimer=new Timer();

    this.splashTimer.schedule(this.splashTimerHandler, 0, 1000);

}

@Override
public void onPause()
{
    super.onPause();
    this.applicationPaused=true;
    this.closeSplashTimer();
}

@Override
public void onResume()
{
    super.onResume();

    if(this.applicationPaused)
    {
        this.applicationPaused=false;
        this.closeSplashTimer();
        this.setSplash();
    }
}

public class SplashTimerHandler extends TimerTask{

    int splashTimerCounter=0;
    @Override
    public void run()
    {
        splashTimerCounter++;
        if(splashTimerCounter>2)
        {
            runOnUiThread(splashTimeOver);
        }       
    }

    private Runnable splashTimeOver=new Runnable() {

        @Override
        public void run()
        {
            closeSplashTimer();
            startHomeScreen();
        }
    };      
}

protected void closeSplashTimer() 
{
    if(this.splashTimer!=null)
    {
        this.splashTimer.cancel();
        this.splashTimer=null;
    }

}

private void startHomeScreen() 
{
    this.closeSplashScreen();
    startActivity(new Intent("com.android.main.HOMEPAGE"));

}

private void closeSplashScreen()
{
    this.closeSplashTimer();
    this.finish();

}

@Override
public boolean onKeyDown(int keycode, KeyEvent event)
{
    if(keycode==KeyEvent.KEYCODE_BACK)
    {
        this.closeSplashScreen();
    }
    return true;
}   
}

android.content.ActivityNotFoundException：找不到处理Intent启动画面的Activity

2 个答案: