所以我试图搜索stackoverflow，但没有一个解决方案对我有用。我想从服务器获取数据，所以我发布请求，然后如果结果为真，我需要更改活动。
package com.example.earchive;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class LoginActivity extends Activity {
public String propertyNumber;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.login, menu);
/*** Work with login button ***/
final Button button = (Button) findViewById(R.id.login_bt);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
FetchTask fetch = new FetchTask();
EditText email = (EditText)findViewById(R.id.email);
fetch.email = email.getText().toString();
EditText password = (EditText)findViewById(R.id.password);
fetch.password = password.getText().toString();
fetch.v = v;
fetch.execute();
}
});
/*** End of work with login button ***/
return true;
}
public class FetchTask extends AsyncTask<Void, Void, JSONArray> {
public JSONArray result_arr;
public String result_str,email,password,test;
public boolean is_loged;
public View v;
@Override
protected JSONArray doInBackground(Void... params) {
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("HERE MY LINK");
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("em", this.email));
nameValuePairs.add(new BasicNameValuePair("pa", this.password));
nameValuePairs.add(new BasicNameValuePair("os", "android"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "utf-8"), 8);
StringBuilder sb = new StringBuilder();
sb.append(reader.readLine());
String line = "0";
while ((line = reader.readLine()) != null) {
sb.append(line);
}
reader.close();
String result11 = sb.toString();
this.result_str = result11;
// parsing data
JSONArray arr = new JSONArray(result11);
return new JSONArray(result11);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
@Override
protected void onPostExecute(JSONArray result) {
int auth;
if (result != null) {
JSONObject json_data;
try {
json_data = result.getJSONObject(0);
auth = json_data.getInt("auth");
if(auth != 0)
{
startActivity(new Intent(LoginActivity.this, InboxActivity.class));
}
else
{
}
} catch (JSONException e1) {
e1.printStackTrace();
}
} else {
System.out.println("error occured");
}
}
}
}
我的InboxActivity类
package com.example.earchive;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class InboxActivity extends Activity {
public String propertyNumber;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_inbox);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.login, menu);
return true;
}
}
这是我的AndroidManifest代码（res / AndroidManifest.xml）
这是来自res / AndroidManifest.xml的代码
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.earchive"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.earchive.LoginActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
我的错误记录：
02-18 06:45:26.611: E/AndroidRuntime(1814): FATAL EXCEPTION: main
02-18 06:45:26.611: E/AndroidRuntime(1814): Process: com.example.earchive, PID: 1814
02-18 06:45:26.611: E/AndroidRuntime(1814): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.earchive/com.example.earchive.InboxActivity}; have you declared this activity in your AndroidManifest.xml?
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Activity.startActivityForResult(Activity.java:3424)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Activity.startActivityForResult(Activity.java:3385)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Activity.startActivity(Activity.java:3627)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.Activity.startActivity(Activity.java:3595)
02-18 06:45:26.611: E/AndroidRuntime(1814): at com.example.earchive.LoginActivity$FetchTask.onPostExecute(LoginActivity.java:155)
02-18 06:45:26.611: E/AndroidRuntime(1814): at com.example.earchive.LoginActivity$FetchTask.onPostExecute(LoginActivity.java:1)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.os.AsyncTask.finish(AsyncTask.java:632)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.os.AsyncTask.access$600(AsyncTask.java:177)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.os.Handler.dispatchMessage(Handler.java:102)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.os.Looper.loop(Looper.java:136)
02-18 06:45:26.611: E/AndroidRuntime(1814): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-18 06:45:26.611: E/AndroidRuntime(1814): at java.lang.reflect.Method.invokeNative(Native Method)
02-18 06:45:26.611: E/AndroidRuntime(1814): at java.lang.reflect.Method.invoke(Method.java:515)
02-18 06:45:26.611: E/AndroidRuntime(1814): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-18 06:45:26.611: E/AndroidRuntime(1814): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-18 06:45:26.611: E/AndroidRuntime(1814): at dalvik.system.NativeStart.main(Native Method)
当我运行我的应用程序时，当我发送帖子请求时，我看到错误"Unfortunately, APPNAME has stopped"
我需要做什么？
感谢所有人！
答案 0 :(得分：0)
添加
<activity android:name="com.example.earchive.InboxActivity">
</activity>
application标记中的