registerReceiver（...）获得通过ClickListener [英] registerReceiver(...) getting passed ClickListener
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问题描述
我有一些困难，传递正确的信息来建立Bluetooth发现和配对。我一直在密切关注Android开发示例文档pretty而一直没能找出我需要传递给此方法。这是网站，我一直在使用，以供参考。
http://developer.android.com/guide/topics/connectivity/ bluetooth.html
TransferFragment：
//一些$ C $从用c
// HTTP：//examples.java$c$cgeeks.com/android/core/ui/progressdialog/android-progressdialog-example/
// http://developer.android.com/guide/topics/connectivity/bluetooth.html包com.project.BluetoothTransfer_v1000;进口java.util.Set中;进口android.app.AlertDialog;
进口android.app.ProgressDialog;
进口android.bluetooth.BluetoothAdapter;
进口android.bluetooth.BluetoothDevice;
进口android.content.BroadcastReceiver;
进口android.content.Context;
进口android.content.DialogInterface;
进口android.content.Intent;
进口android.content.IntentFilter;
进口android.os.Bundle;
进口android.os.Handler;
进口android.support.v4.app.Fragment;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.ArrayAdapter;
进口android.widget.Button;
进口android.widget.ImageView;
进口android.widget.TextView;
进口android.widget.Toast;公共类TransferFragment扩展片段{ 私人TextView的filePathTextView;
私人按钮startTransferButton;
私人ImageView的bluetoothImage;
ProgressDialog transferDialog;
处理器updateBarHandler;
私有静态最终诠释REQUEST_BLUETOOTH = 1;
私有静态最终诠释DISCOVER_DURATION = 300;
上下文语境;
ArrayAdapter mArrayAdapter; @覆盖
公共查看onCreateView（LayoutInflater吹气，ViewGroup中的父母，最后捆绑savedInstanceState）{ super.onCreate（savedInstanceState）; //设置用户界面布局为这项活动
setRetainInstance（假）;
视图V = inflater.inflate（R.layout.activity_bluetooth_transfer，父母，假）; 上下文= this.getActivity（）;
filePathTextView =（TextView中）v.findViewById（R.id.file_path_textView）;
startTransferButton =（按钮）v.findViewById（R.id.start_transfer_button）;
bluetoothImage =（ImageView的）v.findViewById（R.id.bluetooth_imageView）;
bluetoothImage.setClickable（真）; startTransferButton.setOnClickListener（新View.OnClickListener（）{
//启动转移过程
@燮pressWarnings（未登记）
@覆盖
公共无效的onClick（视图v）{
//检查以确保文件路径文本视图！= NULL
BluetoothAdapter btAdapter = BluetoothAdapter.getDefaultAdapter（）;
INT REQUEST_ENABLE_BT = -1;
//确保所使用的设备具有蓝牙能力
如果（btAdapter！= NULL）{
//检查启用蓝牙
如果（！btAdapter.isEnabled（））{
意图enableBtIntent =新意图（BluetoothAdapter.ACTION_REQUEST_ENABLE）;
startActivityForResult（enableBtIntent，REQUEST_ENABLE_BT）;
}
//保证的TextView不为空
//检查文件路径为空
如果（filePathTextView.getText（）。的toString（）。长度（）！= 0）{
SET＆LT;＆BluetoothDevice类GT; pairedDevices = btAdapter.getBondedDevices（）;
//检查是否有配对设备
如果（pairedDevices.size（）大于0）{
//通过配对设备循环
对于（BluetoothDevice类设备：pairedDevices）{
//添加名称和地址到一个数组适配器在ListView显示
mArrayAdapter.add（device.getName（）+\\ n+ device.getAddress（））;
}
} //最终找到配对的设备，如果 //创建ACTION_FOUND一个BroadcastReceiver
最终的BroadcastReceiver mReceiver =新的广播接收器（）{
公共无效的onReceive（上下文的背景下，意图意图）{
字符串行动= intent.getAction（）;
//当发现找到的设备
如果（BluetoothDevice.ACTION_FOUND.equals（动作））{
//从意向获取BluetoothDevice类对象
BluetoothDevice类设备= intent.getParcelableExtra（BluetoothDevice.EXTRA_DEVICE）;
//添加名称和地址到一个数组适配器在ListView显示
mArrayAdapter.add（device.getName（）+\\ n+ device.getAddress（））;
}
}
};
//注册的BroadcastReceiver
IntentFilter的过滤器=新的IntentFilter（BluetoothDevice.ACTION_FOUND）; //编译器错误BELOW @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@@@@@@@@
//这种方法registerReceiver（广播接收器，IntentFilter的）
//未定义类型新View.OnClickListener
registerReceiver（mReceiver，过滤器）; 意向discoverableIntent =新
意图（BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE）;
discoverableIntent.putExtra（BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION，300）;
startActivity（discoverableIntent）;
btAdapter.cancelDiscovery（）;
} //
其他{
//警告用户输入文件路径
新AlertDialog.Builder（上下文）.setTitle（错误）
.setMessage（请插入文件名派。）
.setPositiveButton（OK，新DialogInterface.OnClickListener（）{
@覆盖
公共无效的onClick（DialogInterface对话，诠释它）{}
}）。显示（）;
} // IFNULL（否则）
} // BT装备检查
} //结束不久类
}）; bluetoothImage.setOnClickListener（新View.OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
//显示对话框显示程序规范和创造者
新AlertDialog.Builder（上下文）.setTitle（关于）
.setMessage（创建者：+\\ n+哈尔，克里斯，和罗杰）
.setPositiveButton（真棒！，新DialogInterface.OnClickListener（）{
@覆盖
公共无效的onClick（DialogInterface对话，诠释它）{
}
}）。显示（）;
}
}）;
返回伏;
}
}
TransferActivity：
包com.project.BluetoothTransfer_v1000;进口android.os.Bundle;
进口android.support.v4.app.FragmentActivity;
进口android.support.v4.app.FragmentManager;
进口android.support.v4.app.FragmentTransaction;公共类TransferActivity扩展FragmentActivity { @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_transfer）;
TransferFragment片段=新TransferFragment（）;
FragmentManager fragmentManager = getSupportFragmentManager（）;
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction（）;
fragmentTransaction.add（R.id.container，片段）;
fragmentTransaction.commit（）;
}
}
解决方案
尝试：
TransferFragment.this.getActivity（）registerReceiver（mReceiver，过滤器）。
而不是：
registerReceiver（mReceiver，过滤器）;
由于该方法 registerReceiver 是活动的一部分，而不是OnClickListener。这就是为什么错误信息抱怨找不到方法OnClickListener：
此方法registerReceiver（广播接收器，IntentFilter的）
是未定义类型新View.OnClickListenerI am having some difficulty passing the right information to set up Bluetooth discovery and pairing. I have been following the Android developer example documents pretty closely and have not been able to figure out what I need to pass to this method. This is the site I have been using, for reference.
http://developer.android.com/guide/topics/connectivity/bluetooth.html
TransferFragment:
//some code used from // http://examples.javacodegeeks.com/android/core/ui/progressdialog/android-progressdialog-example/ // http://developer.android.com/guide/topics/connectivity/bluetooth.html package com.project.BluetoothTransfer_v1000; import java.util.Set; import android.app.AlertDialog; import android.app.ProgressDialog; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class TransferFragment extends Fragment{ private TextView filePathTextView; private Button startTransferButton; private ImageView bluetoothImage; ProgressDialog transferDialog; Handler updateBarHandler; private static final int REQUEST_BLUETOOTH = 1; private static final int DISCOVER_DURATION = 300; Context context; ArrayAdapter mArrayAdapter; @Override public View onCreateView(LayoutInflater inflater, ViewGroup parent, final Bundle savedInstanceState){ super.onCreate(savedInstanceState); //set the user interface layout for this activity setRetainInstance(false); View v = inflater.inflate(R.layout.activity_bluetooth_transfer, parent, false); context = this.getActivity(); filePathTextView = (TextView) v.findViewById(R.id.file_path_textView); startTransferButton = (Button) v.findViewById(R.id.start_transfer_button); bluetoothImage = (ImageView) v.findViewById(R.id.bluetooth_imageView); bluetoothImage.setClickable(true); startTransferButton.setOnClickListener(new View.OnClickListener() { //start transfer processes @SuppressWarnings("unchecked") @Override public void onClick(View v){ //check to make sure the file path text view != null BluetoothAdapter btAdapter = BluetoothAdapter.getDefaultAdapter(); int REQUEST_ENABLE_BT = -1; //ensure the device being used has bluetooth capability if (btAdapter != null){ //check-enable bluetooth if (!btAdapter.isEnabled()) { Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); } //ensure the textview isn't empty //check if filepath is null if (filePathTextView.getText().toString().length() != 0){ Set<BluetoothDevice> pairedDevices = btAdapter.getBondedDevices(); //check if there are paired devices if (pairedDevices.size() > 0){ //loop through paired devices for (BluetoothDevice device: pairedDevices){ //add the name and address to an array adapter to show in a ListView mArrayAdapter.add(device.getName() + "\n" + device.getAddress()); } }//end found paired devices if // Create a BroadcastReceiver for ACTION_FOUND final BroadcastReceiver mReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); // When discovery finds a device if (BluetoothDevice.ACTION_FOUND.equals(action)) { // Get the BluetoothDevice object from the Intent BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); // Add the name and address to an array adapter to show in a ListView mArrayAdapter.add(device.getName() + "\n" + device.getAddress()); } } }; // Register the BroadcastReceiver IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); //COMPILER ERROR BELOW @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ //"This method registerReceiver(BroadcastReceiver, IntentFilter) //is undefined for type new View.OnClickListener registerReceiver(mReceiver, filter); Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); startActivity(discoverableIntent); btAdapter.cancelDiscovery(); }// else { //alert user to input file path new AlertDialog.Builder(context).setTitle("Error") .setMessage("Please insert a filename to send.") .setPositiveButton("Ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {} }).show(); }//ifnull (else) }//bt equipped check }//end anon class }); bluetoothImage.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //display dialog showing program specs and creators new AlertDialog.Builder(context).setTitle("About") .setMessage("Created by:"+"\n"+ "Hal, Chris, and Roger") .setPositiveButton("Awesome!", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }).show(); } }); return v; } }TransferActivity:
package com.project.BluetoothTransfer_v1000; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; public class TransferActivity extends FragmentActivity{ @Override protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_transfer); TransferFragment fragment = new TransferFragment(); FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.add(R.id.container, fragment); fragmentTransaction.commit(); } }
解决方案Try:
TransferFragment.this.getActivity().registerReceiver(mReceiver, filter);Instead of:
registerReceiver(mReceiver, filter);Because the method
registerReceiveris part of the Activity and not the OnClickListener. This is why the error message complains about not found method in OnClickListener:This method registerReceiver(BroadcastReceiver, IntentFilter) is undefined for type new View.OnClickListener
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