ActivityManager：警告：活動未啓動，其當前任務已提前

package supa.mack.doppler; 

import java.util.Set; 

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.TextView; 
import android.bluetooth.*; 
import android.widget.Toast; 

public class doppler_test extends Activity { 
TextView out; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 

out = (TextView) findViewById(R.id.out); 

// Getting the Bluetooth adapter 
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 
out.append("\nAdapter: " + adapter); 

// Check for Bluetooth support in the first place 
// Emulator doesn't support Bluetooth and will return null 
if(adapter==null) { 
out.append("\nBluetooth NOT supported. Aborting."); 
return; 
} 

// Starting the device discovery 
out.append("\nStarting discovery..."); 
adapter.startDiscovery(); 
out.append("\nDone with discovery..."); 

// Listing paired devices 
out.append("\nDevices Pared:"); 
Set<BluetoothDevice> devices = adapter.getBondedDevices(); 
for (BluetoothDevice device : devices) { 
out.append("\nFound device: " + device); 
} 

Button searchButton=(Button) findViewById(R.id.search_button); 
searchButton.setOnClickListener(new View.OnClickListener(){ 
public void onClick(View v) { 
Intent intent=new Intent(
doppler_test.this, 
search_result.class 
); 

startActivity(intent); 
} 
}); 
} 
}

--------------------------- ----------- ...ActivityManager：警告：活動未啓動，其當前任務已提前

這是問題所在的代碼....

它不給我它到底說這樣的一個錯誤，當我運行Android模擬器

"[2010-08-25 09:12:42 - doppler_test] ActivityManager: Warning: Activity not started, its current task has been brought to the front"

我認爲這意味着藍牙功能的意圖和按鈕意圖只是操作o一個分級系統。我的意思是，如果我要將按鈕操作器移動到藍牙以上，按鈕將起作用，但是當前應用程序運行時藍牙工作正常，但是當我按下搜索按鈕時，什麼都不會發生。

還有什麼可能是有益的是按鈕我的XML代碼，所以這裏是......

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
xmlns:android="http://schemas.android.co… 
android:orientation="vertical" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:gravity="center_horizontal" 
android:background="@color/purple_flurp"… 
<TextView 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="@string/hello"/> 
<Button 
android:id="@+id/search_button" 
android:layout_height="wrap_content" 
android:text="@string/search" 
android:layout_width="fill_parent"/> 

<TextView 
android:text="@+id/TextView01" 
android:id="@+id/out" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"> 
</TextView> 
</LinearLayout>

----------------- --------------------- ...

有什麼想法嗎？任何事情都會很棒！謝謝

來源

2010-08-25 David