我使用此链接进行了天气预报
http://www.anddev.org/android_weather_forecast_-_google_weather_api_-_full_source-t361.html
我收到了以下错误：
08-09 10:57:45.737: ERROR/AndroidRuntime(539): FATAL EXCEPTION: main
08-09 10:57:45.737: ERROR/AndroidRuntime(539): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.anddev.android.weatherforecast/org.anddev.android.weatherforecast.WeatherForecast}: android.view.InflateException: Binary XML file line #55: Error inflating class org.anddev.android.weatherforecast.views.SingleWeatherInfoView
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.os.Looper.loop(Looper.java:123)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread.main(ActivityThread.java:3683)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at java.lang.reflect.Method.invoke(Method.java:507)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at dalvik.system.NativeStart.main(Native Method)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): Caused by: android.view.InflateException: Binary XML file line #55: Error inflating class org.anddev.android.weatherforecast.views.SingleWeatherInfoView
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.createView(LayoutInflater.java:508)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.Activity.setContentView(Activity.java:1657)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at org.anddev.android.weatherforecast.WeatherForecast.onCreate(WeatherForecast.java:36)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): ... 11 more
08-09 10:57:45.737: ERROR/AndroidRuntime(539): Caused by: java.lang.NoSuchMethodException: SingleWeatherInfoView(Context,AttributeSet)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at java.lang.Class.getMatchingConstructor(Class.java:643)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at java.lang.Class.getConstructor(Class.java:472)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): at android.view.LayoutInflater.createView(LayoutInflater.java:480)
08-09 10:57:45.737: ERROR/AndroidRuntime(539): ... 21 more
这是我的Xml文件main.xml
<?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"
android:background="@drawable/weather_background"
>
<TableLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="0"
>
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Usage like: 'City, Country'"
android:gravity="left"
/>
<CheckBox android:id="@+id/chk_usecelsius"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Use °C (not °F)"
android:gravity="right"
/>
</TableRow>
</TableLayout>
<TableLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="0"
>
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<EditText android:id="@+id/edit_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Schriesheim, Germany"
android:singleLine="true"
/>
<Button android:id="@+id/cmd_submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OK"
/>
</TableRow>
</TableLayout>
<org.anddev.android.weatherforecast.views.SingleWeatherInfoView
android:id="@+id/weather_today"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:paddingTop="15px"
/>
<TableLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="0,1,2,3"
android:paddingTop="15px"
>
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<org.anddev.android.weatherforecast.views.SingleWeatherInfoView
android:id="@+id/weather_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical"
/>
<org.anddev.android.weatherforecast.views.SingleWeatherInfoView
android:id="@+id/weather_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical"
/>
<org.anddev.android.weatherforecast.views.SingleWeatherInfoView
android:id="@+id/weather_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical"
/>
<org.anddev.android.weatherforecast.views.SingleWeatherInfoView
android:id="@+id/weather_4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical"
/>
</TableRow>
</TableLayout>
这是我的班级文件
public class SingleWeatherInfoView extends LinearLayout {
private ImageView myWeatherImageView = null;
private TextView myTempTextView = null;
public SingleWeatherInfoView(Context context) {
super(context);
}
public SingleWeatherInfoView(Context context, AttributeSet attrs,
Map inflateParams) {
super(context, attrs);
/* Setup the ImageView that will show weather-icon. */
this.myWeatherImageView = new ImageView(context);
this.myWeatherImageView.setImageDrawable(getResources().getDrawable(
R.drawable.dunno));
/* Setup the textView that will show the temperature. */
this.myTempTextView = new TextView(context);
this.myTempTextView.setText("? °C");
this.myTempTextView.setTextSize(16);
this.myTempTextView.setTypeface(Typeface
.create("Tahoma", Typeface.BOLD));
/* Add child views to this object. */
this.addView(this.myWeatherImageView, new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
this.addView(this.myTempTextView, new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
}
public void reset() {
this.myWeatherImageView.setImageDrawable(getResources().getDrawable(
R.drawable.dunno));
this.myTempTextView.setText("? °C");
}
/** Sets the Child-ImageView of this to the URL passed. */
public void setRemoteImage(URL aURL) {
try {
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
Bitmap bm = BitmapFactory.decodeStream(bis);
bis.close();
is.close();
this.myWeatherImageView.setImageBitmap(bm);
} catch (IOException e) {
/* Reset to 'Dunno' on any error. */
this.myWeatherImageView.setImageDrawable(getResources()
.getDrawable(R.drawable.dunno));
}
}
public void setTempCelcius(int aTemp) {
this.myTempTextView.setText("" + aTemp + " °C");
}
public void setTempFahrenheit(int aTemp) {
this.myTempTextView.setText("" + aTemp + " °F");
}
public void setTempFahrenheitMinMax(int aMinTemp, int aMaxTemp) {
this.myTempTextView.setText("" + aMinTemp + "/" + aMaxTemp + " °F");
}
public void setTempCelciusMinMax(int aMinTemp, int aMaxTemp) {
this.myTempTextView.setText("" + aMinTemp + "/" + aMaxTemp + " °C");
}
public void setTempString(String aTempString) {
this.myTempTextView.setText(aTempString);
}
}
导致这些错误的原因是什么？
答案 0 :(得分：0)
只需将Setup ImageView之后的所有逻辑移动到新方法init（...）中，然后从移动逻辑的位置调用它。
创建 public SingleWeatherInfoView（Context context，AttributeSet attrs）{ super（context，attrs）; 在里面（...）; }
答案 1 :(得分：0)
您使用的SingleWeatherInfoView类似乎不能正确支持XML通胀。您应该尝试从代码而不是XML创建它的实例，看看它是否有效。
答案 2 :(得分：0)
我遇到了同样的问题，而我所犯的错误是在 main.xml 中为 SingleWeatherInfoView 包添加了错误的地址：
com.beach.alpha.SingleWeatherInfoView
确保您的项目有此路径。