這是我第一個使用this series進行學習的Android應用程序,當我運行模擬器時出現錯誤。運行Android模擬器時出錯
這裏的程序:
package com.thenewboston.android.sarabjeet;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
int counter;
Button add, sub;
TextView display;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
counter = 0;
add = (Button) findViewById(R.id.bAdd);
sub = (Button) findViewById(R.id.bSubtract);
display = (TextView) findViewById(R.id.tvDisplay);
add.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
counter++;
display.setText("Your total is " + counter);
}
});
sub.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
counter--;
display.setText("Your total is " + counter);
}
});
}
}
而這裏的運行時信息和錯誤:
[2011-10-12 18:16:57 - sarabjeet] Android Launch!
[2011-10-12 18:16:57 - sarabjeet] adb is running normally.
[2011-10-12 18:16:57 - sarabjeet] Performing com.thenewboston.android.sarabjeet.MainActivity activity launch
[2011-10-12 18:16:57 - sarabjeet] Automatic Target Mode: Preferred AVD 'Sarabjeets_Phone' is available on emulator 'emulator-5554'
[2011-10-12 18:17:00 - sarabjeet] Application already deployed. No need to reinstall.
[2011-10-12 18:17:00 - sarabjeet] Starting activity com.thenewboston.android.sarabjeet.MainActivity on device emulator-5554
[2011-10-12 18:17:02 - sarabjeet] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.thenewboston.android.sarabjeet/.MainActivity }
[2011-10-12 18:17:02 - sarabjeet] **ActivityManager: Warning: Activity not started, its current task has been brought to the front**
我全新到Android編程和運行仿真器。這裏有什麼可能是錯誤的,我沒有看到模擬器,因爲我應該?
非常感謝。
程序中的真正錯誤只會顯示在logcat中。閱讀本文以瞭解如何顯示logcat內容:http://developer.android.com/guide/developing/tools/adb.html#logcat – WarrenFaith