Question

我是一个真正的新开发者。我目前正和我的朋友一起做BLE的事情，但我们总是有一个问题要将我的项目移到他的电脑上，他的项目会转移到我的电脑上。

他根本不喜欢使用GitHub，我实际上也是如此，所以我们只想使用闪存驱动器来传输项目文件夹。（这是我从stackoverflow.com找到的方式）

我总是有错误，这种转移文件夹方式永远不会像我们尊重的那样工作。大多数问题来自“无法解决符号'R'，例如：

setContentView(R.layout.activity_main);

我已经在线查询，大多数人只是说“干净的项目”，但它根本不起作用。

有些人说，activity_main.xml有问题，但我找不到问题。

MainActivity.java

package test.research.sjsu.beaconbroadcast;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothManager;
import android.bluetooth.le.AdvertiseCallback;
import android.bluetooth.le.AdvertiseData;
import android.bluetooth.le.AdvertiseSettings;
import android.bluetooth.le.BluetoothLeAdvertiser;
import android.content.Context;
import android.os.Bundle;
import android.os.ParcelUuid;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

import java.util.UUID;

public class MainActivity extends AppCompatActivity {

    BluetoothManager mBluetoothManager;
    BluetoothAdapter mBluetoothAdapter;
    BluetoothLeAdvertiser mBluetoothLeAdvertiser;
    AdvertiseData mAdvertiseData;
    AdvertiseData.Builder mAdvertiseDataBuilder = new AdvertiseData.Builder();
    byte[] Data = new byte[4];
    ParcelUuid mServiceDataUUID;
    AdvertiseSettings mAdvertiseSettings;
    AdvertiseSettings.Builder mAdvertiseSettingBuilder = new AdvertiseSettings.Builder();
    Button BroadcastButton;
    Button StopBroadcastButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
        mBluetoothAdapter = mBluetoothManager.getAdapter();
        mBluetoothLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
        Data = hexStringToByteArray("abcdefgh");


            mServiceDataUUID = ParcelUuid.fromString(UUID.randomUUID().toString());

        mAdvertiseDataBuilder.setIncludeDeviceName(true);
        mAdvertiseDataBuilder.setIncludeTxPowerLevel(true);
        mAdvertiseData = mAdvertiseDataBuilder.build();


        mAdvertiseDataBuilder.addServiceData(mServiceDataUUID,Data);
        mAdvertiseSettingBuilder.setAdvertiseMode(1);
        mAdvertiseSettingBuilder.setTimeout(0);
        mAdvertiseSettingBuilder.setTxPowerLevel(2);
        mAdvertiseSettingBuilder.setConnectable(true);
        mAdvertiseSettings = mAdvertiseSettingBuilder.build();
        BroadcastButton = (Button) findViewById(R.id.BroadcastButton);
        BroadcastButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startAdvertise();
            }
        });
        StopBroadcastButton = (Button) findViewById(R.id.StopBraodcastButton);
        StopBroadcastButton.setVisibility(View.INVISIBLE);
        StopBroadcastButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                stopAdvertise();
            }
        });

    }

这是我的activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="test.research.sjsu.beaconbroadcast">
    android:versionCode="1"
    android:versionName="1.0"
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-feature android:name="android.hardware.bluetooth_le"  android:required="true" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

有时还有其他红线，但现在R问题让我发疯了。

将文件从一台计算机移动到另一台计算机

0 个答案: