3 日前から対処している問題があり、別の回答を読み込もうとしましたが、役に立ちませんでした。誰か私も手伝ってくれませんか!! 安らかな Web サービスのクライアントとして Ancdroid アプリを作成します。問題なくデータベースからデータを取得できますが、データベースから取得したこのファイルを操作するために使用している2つのアクティビティに問題があります。
主な活動
public class MainActivity extends Activity {
private static final String SERVICE_URL = "http://10.0.2.2:8080/.....";
private static final String TAG = "AndroidRESTClientActivity";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void retrieveSampleData(View vw) {
EditText idTxt = (EditText) findViewById(R.id.id_textfield);
String id = idTxt.getText().toString();
String sampleURL = SERVICE_URL +"daten/"+id ;
Log.d("getrespond()", "service calling");
String url =sampleURL;
RestClient client = new RestClient(url);
try{
client.Execute(RestClient.RequestMethod.GET,this.getApplicationContext());
}
catch (Exception e) {
String error = String.valueOf(e);
Log.d("**********client.Execute(RequestMethod.GET);***********",error);
}
try {
if(client.getResponseCode() == 200) {
Log.d("Response is 200", String.valueOf(client.getResponse().length()));
System.out.println(this.getFilesDir().getPath().toString());
File daten= client.getResponse();
System.out.println(daten.getName());
Toast.makeText(this.getApplicationContext(), "Responce is "+String.valueOf(client.getResponseCode()), 2000).show();
} else {
String error = String.valueOf(client.getResponse());
Log.d("Response*********** not 200 ************", String.valueOf(client.getResponse()));
}
}catch (Exception e) {
e.printStackTrace();
Log.d("EXCEPTIONI IS 3", e.toString());
// TODO: handle exception
}
startActivity(new Intent("android.intent.action.LINEGRAPH"));
メインから開始する他のアクティビティ:
public class lineGraph extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_line_graph);
}
@Override
protected void onResume() {
super.onResume();
if (mChartView == null) {
LinearLayout layout = (LinearLayout) findViewById(R.id.chart);
try {
mChartView = ChartFactory.getLineChartView(this, getDemoDataset(),
getDemoRenderer());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
layout.addView(mChartView, new LayoutParams
(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
} else {
mChartView.repaint();
}
}
マニフェスト.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.praktikum.androidcrestclient"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
</uses-permission>
<uses-permission android:name="android.permission.INTERNET" >
</uses-permission>
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.praktikum.androidcrestclient.LineGraph"
android:label="@string/title_activity_line_graph" >
<intent-filter>
<action android:name="android.intent.action.LINEGRAPH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="org.achartengine.GraphicalActivity"/>
</application>
</manifest>
そしてここに私のLogCat
10-08 09:23:10.140: D/AndroidRuntime(4706): Shutting down VM
10-08 09:23:10.140: W/dalvikvm(4706): threadid=1: thread exiting with uncaught exception (group=0x40015560)
10-08 09:23:10.161: E/AndroidRuntime(4706): FATAL EXCEPTION: main
10-08 09:23:10.161: E/AndroidRuntime(4706): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.LineGraph}: java.lang.ClassNotFoundException: com.praktikum.androidcrestclient.LineGraph in loader dalvik.system.PathClassLoader[/data/app/com.praktikum.androidcrestclient-1.apk]
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.os.Handler.dispatchMessage(Handler.java:99)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.os.Looper.loop(Looper.java:123)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.main(ActivityThread.java:3683)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.reflect.Method.invokeNative(Native Method)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.reflect.Method.invoke(Method.java:507)
10-08 09:23:10.161: E/AndroidRuntime(4706): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-08 09:23:10.161: E/AndroidRuntime(4706): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-08 09:23:10.161: E/AndroidRuntime(4706): at dalvik.system.NativeStart.main(Native Method)
10-08 09:23:10.161: E/AndroidRuntime(4706): Caused by: java.lang.ClassNotFoundException: com.praktikum.androidcrestclient.LineGraph in loader dalvik.system.PathClassLoader[/data/app/com.praktikum.androidcrestclient-1.apk]
10-08 09:23:10.161: E/AndroidRuntime(4706): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561)
10-08 09:23:10.161: E/AndroidRuntime(4706): ... 11 more
10-08 09:23:10.180: W/ActivityManager(89): Force finishing activity com.praktikum.androidcrestclient/.LineGraph
10-08 09:23:10.180: W/ActivityManager(89): Force finishing activity com.praktikum.androidcrestclient/.MainActivity
10-08 09:23:10.690: W/ActivityManager(89): Activity pause timeout for HistoryRecord{4094eea0 com.praktikum.androidcrestclient/.LineGraph}
10-08 09:23:12.330: I/Process(4706): Sending signal. PID: 4706 SIG: 9
10-08 09:23:12.350: I/ActivityManager(89): Process com.praktikum.androidcrestclient (pid 4706) has died.
10-08 09:23:12.360: E/InputDispatcher(89): channel '4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x8
10-08 09:23:12.360: E/InputDispatcher(89): channel '4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
10-08 09:23:12.490: I/WindowManager(89): WIN DEATH: Window{4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity paused=true}
10-08 09:23:12.500: I/WindowManager(89): WIN DEATH: Window{406c1140 Toast paused=false}
10-08 09:23:12.600: W/InputManagerService(89): Got RemoteException sending setActive(false) notification to pid 4706 uid 10034
10-08 09:23:12.660: E/InputDispatcher(89): Received spurious receive callback for unknown input channel. fd=168, events=0x8
10-08 09:23:16.820: D/dalvikvm(396): GC_EXPLICIT freed 7K, 54% free 2537K/5511K, external 1625K/2137K, paused 43ms
10-08 09:23:21.626: W/ActivityManager(89): Activity destroy timeout for HistoryRecord{4094e768 com.praktikum.androidcrestclient/.MainActivity}
10-08 09:23:21.626: W/ActivityManager(89): Activity destroy timeout for HistoryRecord{4094eea0 com.praktikum.androidcrestclient/.LineGraph}
10-08 09:23:21.900: D/dalvikvm(299): GC_EXPLICIT freed 12K, 55% free 2589K/5703K, external 1625K/2137K, paused 73ms
10-08 09:23:26.950: D/dalvikvm(407): GC_EXPLICIT freed 4K, 55% free 2532K/5511K, external 1625K/2137K, paused 57ms
10-08 09:24:54.097: D/SntpClient(89): request time failed: java.net.SocketException: Address family not supported by protocol
10-08 09:29:54.106: D/SntpClient(89): request time failed: java.net.SocketException: Address family not supported by protocol
10-08 09:34:54.130: D/SntpClient(89): request time failed: java.net.SocketException: Address family not supported by protocol
この他のアクティビティが見つからない理由を見つけるのを手伝ってくれませんか。
ありがとうございました