Android应用程序无法启动

我所要做的只是打开一个非常简单的应用程序，该应用程序不应该在textView上方显示imageView。该应用程序工作正常，直到我添加了imageView，所以我假设我的问题与此有关。Android应用程序无法启动

下面是代码：

package com.isi.sa; 

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

public class SimpleAssessment extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle icicle) { 
     super.onCreate(icicle); 
     setContentView(R.layout.main); 
    } 
}

这里是我的布局 - > main.xml中

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 

    <ImageView 
     android:layout_width="fill_parent" 
     android:src="@drawable/isi_logo"/> 

    <TextView 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:text="@string/hello" 
     android:background="@color/white" 
     android:textColor="@color/black"/> 
</LinearLayout>

当我尝试，并通过模拟器在Eclipse中运行应用程序的仿真器给了我以下错误：

The application Application Name (process.com.isi.sa) has stopped unexpectedly. Please try again.

Eclipse中的控制台日志显示以下消息：

[2010-04-16 11:08:44 - SimpleAssessment] ------------------------------ 
[2010-04-16 11:08:44 - SimpleAssessment] Android Launch! 
[2010-04-16 11:08:44 - SimpleAssessment] adb is running normally. 
[2010-04-16 11:08:44 - SimpleAssessment] Performing com.isi.sa.SimpleAssessment activity launch 
[2010-04-16 11:08:44 - SimpleAssessment] Automatic Target Mode: launching new emulator with compatible AVD 'my_avd' 
[2010-04-16 11:08:44 - SimpleAssessment] Launching a new emulator with Virtual Device 'my_avd' 
[2010-04-16 11:08:47 - SimpleAssessment] New emulator found: emulator-5554 
[2010-04-16 11:08:47 - SimpleAssessment] Waiting for HOME ('android.process.acore') to be launched... 
[2010-04-16 11:09:31 - SimpleAssessment] WARNING: Application does not specify an API level requirement! 
[2010-04-16 11:09:31 - SimpleAssessment] Device API version is 3 (Android 1.5) 
[2010-04-16 11:09:31 - SimpleAssessment] HOME is up on device 'emulator-5554' 
[2010-04-16 11:09:31 - SimpleAssessment] Uploading SimpleAssessment.apk onto device 'emulator-5554' 
[2010-04-16 11:09:31 - SimpleAssessment] Installing SimpleAssessment.apk... 
[2010-04-16 11:10:04 - SimpleAssessment] Success! 
[2010-04-16 11:10:04 - SimpleAssessment] Starting activity com.isi.sa.SimpleAssessment on device 
[2010-04-16 11:10:09 - SimpleAssessment] ActivityManager: Starting: Intent { action=android.intent.action.MAIN categories={android.intent.category.LAUNCHER} comp={com.isi.sa/com.isi.sa.SimpleAssessment} }

在此先感谢您的帮助！

来源

2010-04-16 Ryan

控制台日志通常不如DDMS的输出有用，以备将来参考。 – jqpubliq 2010-04-16 15:24:20

ImageView缺少layout_height，您不能将它们都视为“fill_parent”。您应该使用RelativeLayout或使用绝对高度/宽度。

来源

2010-04-16 15:17:01

第一部分是问题。每个元素都需要layout_height和布局宽度。将ImageView的layout_height设置为“wrap_content”看起来像是打算的。 – jqpubliq 2010-04-16 15:28:36

这是我的问题。谢谢您的帮助。 – Ryan 2010-04-16 16:22:31

Android应用程序无法启动

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