我的android应用程序在android模拟器中意外停止

时间:2014-01-28 23:56:13

标签: android eclipse

我是Android编程的初学者,这是我的第一个应用程序。

当我运行我无法理解的代码时,我在Java Eclipse中有一个错误列表。 他们中有一些 : 01-28 14:52:10.798:W / dalvikvm(347):threadid = 7:线程退出未捕获异常(组= 0x4001d800) 01-28 14:52:10.798:E / AndroidRuntime(347):致命异常:Thread-9 01-28 14:52:10.798:E / AndroidRuntime(347):android.content.ActivityNotFoundException:找不到处理Intent的活动{act = com.zewailiansapp.ust.FORMS} 01-28 14:52:10.798:E / AndroidRuntime(347):在android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1408) 01-28 14:52:10.798:E / AndroidRuntime(347):在android.app.Instrumentation.execStartActivity(Instrumentation.java:1378) 01-28 14:52:10.798:E / AndroidRuntime(347):在android.app.Activity.startActivityForResult(Activity.java:2817) 01-28 14:52:10.798:E / AndroidRuntime(347):在android.app.Activity.startActivity(Activity.java:2923) 01-28 14:52:10.798:E / AndroidRuntime(347):at com.zewailiansapp.ust.Mainactivity $ 4 $ 1.run(Mainactivity.java:124)

我的应用中的每个模板都会重复这些错误。

这是我的清单XML代码

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

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.zewailiansapp.ust.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="com.zewailiansapp.ust.Mainactivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.MAINACTIVITY" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Announcements"
            android:label="Announcements" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.ANNOUNCEMENTS" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Calendar"
            android:label="Online Calendar" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.CALENDAR" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Schedules"
            android:label="Schedules" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.SCHEDULES" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Forms"
            android:label="Forms" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.FORMS" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Social"
            android:label="Social Links" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.SOCIAL" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.zewailiansapp.ust.Aboutus"
            android:label="Credits" >
            <intent-filter>
                <action android:name="com.zewailiansapp.ust.ABOUTUS" />
                <category android:name="android.intent.category.ALTERNATIVE" />
            </intent-filter>
        </activity>

    </application>

</manifest>

这个主要活动Java代码

package com.zewailiansapp.ust;

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

public class Mainactivity extends Activity {

    ImageButton b1;
    ImageButton b2;
    ImageButton b3;
    ImageButton b4;
    ImageButton b5;
    ImageButton b6;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mainactivity);
        b1= (ImageButton) findViewById(R.id.ib1);
        b2= (ImageButton) findViewById(R.id.ib2);
        b3= (ImageButton) findViewById(R.id.ib3);
        b4= (ImageButton) findViewById(R.id.ib4);
        b5= (ImageButton) findViewById(R.id.ib5);
        b6= (ImageButton) findViewById(R.id.ib6);
        b1.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.ANNOUNCEMENTS");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });
        b2.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.CALENDAR");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });
        b3.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.SCHEDULES");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });
        b4.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.FORMS");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });
        b5.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.SOCIAL");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });

        b6.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) {
                Thread timer = new Thread()
                {
                    public void run()
                    {
                        try
                        {
                            sleep(10);
                        }
                        catch(InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                        finally
                        {
                            Intent changeWindow = new Intent("com.zewailiansapp.ust.ABOUTUS");
                            startActivity(changeWindow);
                        }
                    }
                };
                timer.start();
            }
        });


    }


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

}

这个主要的XML布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".Mainactivity"
    android:background="@drawable/program_background"
     >

    <TextView
        android:id="@+id/social"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="400dp"
        android:text="Social Links" />

    <TextView
        android:id="@+id/forms"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="300dp"
        android:text="Forms" />    

    <TextView
        android:id="@+id/aboutus"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="400dp"
        android:text="Credits" />

    <TextView
        android:id="@+id/announcements"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="200dp"
        android:text="Announcements" />

    <TextView
        android:id="@+id/calendar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="200dp"
        android:text="Calendar" />

    <TextView
        android:id="@+id/schedules"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="300dp"
        android:text="Schedules" />

    <ImageButton
        android:id="@+id/ib6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="350dp"
        android:src="@drawable/about" />

    <ImageButton
        android:id="@+id/ib1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="150dp"
        android:src="@drawable/announcement" />

    <ImageButton
        android:id="@+id/ib2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="150dp"
        android:src="@drawable/calendar" />

    <ImageButton
        android:id="@+id/ib5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="350dp"
        android:src="@drawable/social" />

    <ImageButton
        android:id="@+id/ib4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:layout_marginTop="250dp"
        android:src="@drawable/form" />

    <ImageButton
        android:id="@+id/ib3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="250dp"
        android:src="@drawable/schedule" />

</RelativeLayout>

2 个答案:

答案 0 :(得分:0)

ClassCast异常意味着您正在尝试将ImageButton转换为非{1}}。找到代码中看起来像((ImageButton) findViewById(R.id.imageButton))的部分,并确保它引用的ID 实际上 ImageButton,而不是其他内容,例如标准ButtonImageView。如果错误仍然存​​在,请发布您的xml,以便我可以提供更多帮助。

此外,在开始活动时,请使用方法new Intent(getApplicationContext(), <Activity class> ...(即new Intent(getApplicationContext(), MyActivity.class) ...它会比您尝试使用的方法更好。祝您好运!< / p>

答案 1 :(得分:0)

根据最新更新的LogCat,您现在遇到的问题与原始问题不同。以下是您的新问题的解决方案:

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.zewailiansapp.ust.FORMS

据此,您的活动现已开始,您点击了其中一个按钮,但该应用无法找到您要告知其启动的课程。

使用以下代码段开始新活动:

Intent i = new Intent(MyFirstActivity.this, MySecondActivity.class);
startActivity(i);