我一直在学习Android的教程，我完全陷入困境。我的程序由于我找不到的错误而崩溃...这是我的代码。任何人都可以指出我找到正确的方向吗？我的catlog引用了第28行（我在java文件中放置了注释），我已经看过了，但找不到错误或引用错误。
清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.yamba"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="14" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Light">
<activity
android:name=".StatusActivity"
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>
status.xml
<LinearLayout 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:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/status_update"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:onClick="onClick"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/button_update" />
<EditText
android:id="@+id/edit_status"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:hint="@string/status_hint"
android:inputType="textMultiLine" />
</LinearLayout>
StatusActivity.java
package com.example.yamba;
import winterwell.jtwitter.Twitter;
import winterwell.jtwitter.TwitterException;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class StatusActivity extends Activity {
static final String TAG = "StatusActivity";
EditText editStatus;
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
Log.d(TAG, "onCreated with Bundle" + bundle);
setContentView(R.layout.status);
editStatus = (EditText) findViewById(R.id.edit_status);
}
public void onClick(View v) {
String statusText = editStatus.getText().toString();
new PostToTwitter().execute(statusText); // Line 28
Log.d(TAG, "onClicked with Text" + statusText);
}
class PostToTwitter extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
try {
Twitter twitter = new Twitter("student", "password");
twitter.setAPIRootUrl("http://yamba.marakana.com/api");
twitter.setStatus(params[0]);
Log.d(TAG, "Successfully Posted:" + params[0]);
return "Successfully posted:" + params[0];
} catch (TwitterException e) {
Log.e(TAG, "Died", e);
e.printStackTrace();
return "Failed posting:" + params[0];
}
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
Toast.makeText(StatusActivity.this, result, Toast.LENGTH_LONG).show();
}
}
}
这是我输入状态并提交
后的catlog12-03 05:43:56.716: W/dalvikvm(2482): VFY: unable to resolve new-instance 819 (Lwinterwell/jtwitter/Twitter;) in Lcom/example/yamba/StatusActivity$PostToTwitter;
12-03 05:43:56.726: D/dalvikvm(2482): VFY: replacing opcode 0x22 at 0x0001
12-03 05:43:56.726: W/dalvikvm(2482): VFY: unable to resolve exception class 820 (Lwinterwell/jtwitter/TwitterException;)
12-03 05:43:56.736: W/dalvikvm(2482): VFY: unable to find exception handler at addr 0x3f
12-03 05:43:56.736: W/dalvikvm(2482): VFY: rejected Lcom/example/yamba/StatusActivity$PostToTwitter;.doInBackground ([Ljava/lang/String;)Ljava/lang/String;
12-03 05:43:56.736: W/dalvikvm(2482): VFY: rejecting opcode 0x0d at 0x003f
12-03 05:43:56.736: W/dalvikvm(2482): VFY: rejected Lcom/example/yamba/StatusActivity$PostToTwitter;.doInBackground ([Ljava/lang/String;)Ljava/lang/String;
12-03 05:43:56.736: W/dalvikvm(2482): Verifier rejected class Lcom/example/yamba/StatusActivity$PostToTwitter;
12-03 05:43:56.786: D/AndroidRuntime(2482): Shutting down VM
12-03 05:43:56.796: W/dalvikvm(2482): threadid=1: thread exiting with uncaught exception (group=0xb3ad8b90)
12-03 05:43:56.936: E/AndroidRuntime(2482): FATAL EXCEPTION: main
12-03 05:43:56.936: E/AndroidRuntime(2482): Process: com.example.yamba, PID: 2482
12-03 05:43:56.936: E/AndroidRuntime(2482): java.lang.IllegalStateException: Could not execute method of the activity
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.view.View$1.onClick(View.java:3814)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.view.View.performClick(View.java:4424)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.view.View$PerformClick.run(View.java:18383)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.os.Handler.handleCallback(Handler.java:733)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.os.Handler.dispatchMessage(Handler.java:95)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.os.Looper.loop(Looper.java:137)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.app.ActivityThread.main(ActivityThread.java:4998)
12-03 05:43:56.936: E/AndroidRuntime(2482): at java.lang.reflect.Method.invokeNative(Native Method)
12-03 05:43:56.936: E/AndroidRuntime(2482): at java.lang.reflect.Method.invoke(Method.java:515)
12-03 05:43:56.936: E/AndroidRuntime(2482): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
12-03 05:43:56.936: E/AndroidRuntime(2482): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
12-03 05:43:56.936: E/AndroidRuntime(2482): at dalvik.system.NativeStart.main(Native Method)
12-03 05:43:56.936: E/AndroidRuntime(2482): Caused by: java.lang.reflect.InvocationTargetException
12-03 05:43:56.936: E/AndroidRuntime(2482): at java.lang.reflect.Method.invokeNative(Native Method)
12-03 05:43:56.936: E/AndroidRuntime(2482): at java.lang.reflect.Method.invoke(Method.java:515)
12-03 05:43:56.936: E/AndroidRuntime(2482): at android.view.View$1.onClick(View.java:3809)
12-03 05:43:56.936: E/AndroidRuntime(2482): ... 11 more
12-03 05:43:56.936: E/AndroidRuntime(2482): Caused by: java.lang.VerifyError: com/example/yamba/StatusActivity$PostToTwitter
12-03 05:43:56.936: E/AndroidRuntime(2482): at com.example.yamba.StatusActivity.onClick(StatusActivity.java:28)
12-03 05:43:56.936: E/AndroidRuntime(2482): ... 14 more
答案 0 :(得分：0)
将第28行替换为以下行，看看它是否有效
PostToTwitter object=new PostToTwitter();
object.excute(statusText);
您需要阅读有关异步任务的更多信息