我正在开发一个简单的BMI应用程序，但我不知道当我启动应用程序崩溃时发生了什么。
文件名：MainActivity.java
package com.achkars.myownbmi;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void calculate(View v){
EditText number1text=(EditText)findViewById(R.id.num1text);
EditText number2text=(EditText)findViewById(R.id.num2text);
Integer num1=Integer.parseInt(number1text.getText().toString()),num2=Integer.parseInt(number2text.getText().toString());
Integer ans=(num2/(num1*num1))*10000;
TextView answer=(TextView)findViewById(R.id.answertxt);
answer.setText("Your BMI is:"+ans.toString());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
文件名：activity_main.xml
<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:background="@style/AppTheme"
tools:context=".MainActivity" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:src="@android:drawable/screen_background_light" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:src="@android:drawable/screen_background_dark_transparent"
/>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="@string/wtw"
android:textAppearance="?android:attr/textAppearanceLarge" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/imageView2"
android:orientation="vertical" >
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/tocalc"
android:textColor="#000000" />
<TextView
android:id="@+id/num1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/yh"
android:textColor="#000000" />
<EditText
android:id="@+id/num1text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/Here"
android:text="@string/text1" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ywer"
android:textColor="#000000" />
<EditText
android:id="@+id/num2text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/Here" />
<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/calc"
android:onClick="calculate" />
<TextView
android:id="@+id/answertxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/aaa"
android:textColor="#000000" />
</LinearLayout>
</RelativeLayout>
文件名：AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.achkars.myownbmi"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
>
<activity
android:name="com.achkars.myownbmi.MainActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:noHistory="true"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
感谢您的帮助。
logcat的：
04-11 18:28:16.713: W/Trace(799): Unexpected value from nativeGetEnabledTags: 0
04-11 18:28:16.733: W/Trace(799): Unexpected value from nativeGetEnabledTags: 0
04-11 18:28:16.943: D/AndroidRuntime(799): Shutting down VM
04-11 18:28:16.973: W/dalvikvm(799): threadid=1: thread exiting with uncaught exception (group=0x40a70930)
04-11 18:28:17.023: E/AndroidRuntime(799): FATAL EXCEPTION: main
04-11 18:28:17.023: E/AndroidRuntime(799): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.achkars.myownbmi/com.achkars.myownbmi.MainActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class android.widget.RelativeLayout
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.os.Handler.dispatchMessage(Handler.java:99)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.os.Looper.loop(Looper.java:137)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread.main(ActivityThread.java:5039)
04-11 18:28:17.023: E/AndroidRuntime(799): at java.lang.reflect.Method.invokeNative(Native Method)
04-11 18:28:17.023: E/AndroidRuntime(799): at java.lang.reflect.Method.invoke(Method.java:511)
04-11 18:28:17.023: E/AndroidRuntime(799): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-11 18:28:17.023: E/AndroidRuntime(799): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-11 18:28:17.023: E/AndroidRuntime(799): at dalvik.system.NativeStart.main(Native Method)
04-11 18:28:17.023: E/AndroidRuntime(799): Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class android.widget.RelativeLayout
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.createView(LayoutInflater.java:613)
04-11 18:28:17.023: E/AndroidRuntime(799): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
04-11 18:28:17.023: E/AndroidRuntime(799): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.Activity.setContentView(Activity.java:1881)
04-11 18:28:17.023: E/AndroidRuntime(799): at com.achkars.myownbmi.MainActivity.onCreate(MainActivity.java:15)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.Activity.performCreate(Activity.java:5104)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-11 18:28:17.023: E/AndroidRuntime(799): ... 11 more
04-11 18:28:17.023: E/AndroidRuntime(799): Caused by: java.lang.reflect.InvocationTargetException
04-11 18:28:17.023: E/AndroidRuntime(799): at java.lang.reflect.Constructor.constructNative(Native Method)
04-11 18:28:17.023: E/AndroidRuntime(799): at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.LayoutInflater.createView(LayoutInflater.java:587)
04-11 18:28:17.023: E/AndroidRuntime(799): ... 23 more
04-11 18:28:17.023: E/AndroidRuntime(799): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x1/d=0x7f050001 a=-1 r=0x7f050001}
04-11 18:28:17.023: E/AndroidRuntime(799): at android.content.res.Resources.loadDrawable(Resources.java:1927)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.View.<init>(View.java:3328)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.View.<init>(View.java:3257)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.view.ViewGroup.<init>(ViewGroup.java:425)
04-11 18:28:17.023: E/AndroidRuntime(799): at android.widget.RelativeLayout.<init>(RelativeLayout.java:210)
04-11 18:28:17.023: E/AndroidRuntime(799): ... 26 more
LogCat添加。
答案 0 :(得分：0)
对于ImageView，请从
更改src@android/drawable/...
到
@drawable/...