5
這是我的代碼：類轉換異常
package com.example.userpage;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class UserPage extends Activity {
String tv,tv1;
EditText name,pass;
TextView x,y;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) findViewById(R.id.widget44);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
name.setText(" ");
pass.setText(" ");
}
});
x = (TextView) findViewById(R.id.widget46);
y = (TextView) findViewById(R.id.widget47);
name = (EditText)findViewById(R.id.widget41);
pass = (EditText)findViewById(R.id.widget42);
Button button1 = (Button) findViewById(R.id.widget45);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
tv= name.getText().toString();
tv1 = pass.getText().toString();
x.setText(tv);
y.setText(tv1);
}
});
}
}
這是我的日誌貓：
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): FATAL EXCEPTION: main
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.userpage/com.example.userpage.UserPage}: java.lang.ClassCastException: android.widget.TextView
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.os.Handler.dispatchMessage(Handler.java:99)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.os.Looper.loop(Looper.java:123)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at java.lang.reflect.Method.invokeNative(Native Method)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at java.lang.reflect.Method.invoke(Method.java:521)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at dalvik.system.NativeStart.main(Native Method)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): Caused by: java.lang.ClassCastException: android.widget.TextView
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at com.example.userpage.UserPage.onCreate(UserPage.java:34)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
02-16 12:28:32.648: ERROR/AndroidRuntime(1039): ... 11 more
02-16 12:28:32.698: WARN/ActivityManager(67): Force finishing activity com.example.userpage/.UserPage
02-16 12:28:32.967: DEBUG/dalvikvm(292): GC_EXPLICIT freed 46 objects/2240 bytes in 6840ms
02-16 12:28:33.247: WARN/ActivityManager(67): Activity pause timeout for HistoryRecord{43ee7b70 com.example.userpage/.UserPage}
02-16 12:28:36.947: INFO/Process(1039): Sending signal. PID: 1039 SIG: 9
02-16 12:28:37.017: INFO/ActivityManager(67): Process com.example.userpage (pid 1039) has died.
02-16 12:28:37.128: WARN/InputManagerService(67): Window already focused, ignoring focus gain of: [email protected]
02-16 12:28:42.087: DEBUG/dalvikvm(176): GC_EXPLICIT freed 156 objects/11488 bytes in 145ms
02-16 12:28:45.391: WARN/ActivityManager(67): Activity destroy timeout for HistoryRecord{43ee7b70 com.example.userpage/.UserPage}
02-16 12:28:47.177: DEBUG/SntpClient(67): request time failed: java.net.SocketException: Address family not supported by protocol
發表您的XML還 – ingsaurabh 2011-02-16 07:07:36
請只發送錯誤日誌。不要把完整的logcat。在這個問題中也把你的佈局代碼。那麼只有我們可以找出錯誤。 – Mathew 2011-02-16 07:07:42
請僅向我們提供logcat中那些出現錯誤而不是整個logcat輸出的部分。不要忘記格式化它。 – 2011-02-16 07:11:09