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を解決できませんhereのようなテキストビューを使用しようとしましたが、私はいつも "解決できません"というエラーをfindByIdに受け取ります。私は、クラスがアクティビティを拡張していないためですが、それを修正するために熱心ではないと分かりました。 setContenviewの前のgetActivity()とonCreateのgetViewは、初めてアプリケーションを作成しました。 テキストビューに文字列と整数を表示する簡単な方法はありますか？findViewByIdはメソッド
マイXML：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.mbientlab.metawear.starter.DeviceSetupActivityFragment"
tools:showIn="@layout/activity_device_setup">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sync"
android:id="@+id/acc_start"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="71dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="reset"
android:id="@+id/acc_stop"
android:layout_below="@+id/acc_start"
android:layout_centerHorizontal="true"
android:layout_marginTop="59dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Steps: 0"
android:id="@+id/stepView"
android:layout_below="@+id/acc_stop"
android:layout_centerHorizontal="true"
android:layout_marginTop="118dp" />
</RelativeLayout>
マイコード：
package com.mbientlab.metawear.starter;
import android.app.Activity;
import android.bluetooth.BluetoothDevice;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.os.Bundle;
import android.view.ViewGroup;
import android.util.Log;
import android.widget.TextView;
import com.mbientlab.metawear.MetaWearBleService;
import com.mbientlab.metawear.MetaWearBoard;
import com.mbientlab.metawear.data.CartesianFloat;
import com.mbientlab.metawear.AsyncOperation;
import com.mbientlab.metawear.module.Gpio;
import com.mbientlab.metawear.module.Timer;
import com.mbientlab.metawear.Message;
import com.mbientlab.metawear.RouteManager;
import static com.mbientlab.metawear.MetaWearBoard.ConnectionStateHandler;
import static com.mbientlab.metawear.AsyncOperation.CompletionHandler;
import com.mbientlab.metawear.UnsupportedModuleException;
import com.mbientlab.metawear.module.Bmi160Accelerometer;
/**
* A placeholder fragment containing a simple view.
*/
public class DeviceSetupActivityFragment extends Fragment implements ServiceConnection {
//private MetaWearBoard mwBoard;
public Bmi160Accelerometer accModule;
TextView counted_steps; //for showing the steps in the textview
public interface FragmentSettings {
BluetoothDevice getBtDevice();
}
private MetaWearBoard mwBoard= null;
private FragmentSettings settings;
public DeviceSetupActivityFragment() {
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
view.findViewById(R.id.acc_start).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
accModule.readStepCounter(false);
}
});
view.findViewById(R.id.acc_stop).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
accModule.resetStepCounter();
}
});
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_device_setup);
counted_steps = (TextView) findViewById(R.id.stepView);
Activity owner = getActivity();
if (!(owner instanceof FragmentSettings)) {
throw new ClassCastException("Owning activity must implement the FragmentSettings interface");
}
settings = (FragmentSettings) owner;
owner.getApplicationContext().bindService(new Intent(owner, MetaWearBleService.class), this, Context.BIND_AUTO_CREATE);
}
@Override
public void onDestroy() {
super.onDestroy();
///< Unbind the service when the activity is destroyed
getActivity().getApplicationContext().unbindService(this);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
setRetainInstance(true);
return inflater.inflate(R.layout.fragment_device_setup, container, false);
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mwBoard= ((MetaWearBleService.LocalBinder) service).getMetaWearBoard(settings.getBtDevice());
ready();
// Route data from the chip's step counter
accModule.routeData().fromStepCounter(false).stream("step_counter").commit()
.onComplete(new CompletionHandler<RouteManager>() {
@Override
public void success(RouteManager result) {
result.subscribe("step_counter", new RouteManager.MessageHandler() {
@Override
public void process(Message msg) {
Log.i("MainActivity", "Steps= " + msg.getData(Integer.class));
counted_steps.setText("Steps: " + msg.getData(Integer.class));
}
});
}
});
accModule.start();
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
/**
* Called when the app has reconnected to the board
*/
public void reconnected() { }
/**
* Called when the mwBoard field is ready to be used
*/
public void ready() {
try {
accModule = mwBoard.getModule(Bmi160Accelerometer.class);
accModule.configureStepDetection()
.setSensitivity(Bmi160Accelerometer.StepSensitivity.NORMAL)
// Enable step counter
.enableStepCounter()
.commit();
} catch (UnsupportedModuleException e) {
e.printStackTrace();
}
}
}
まず、ActivityクラスをFragmentに「結合」したようです。「setContentView」はどちらも解決しません –
'view'をグローバル属性として保存し、' findViewById'を呼び出すために使用します –
@SantiGil - それはあなたが断片を使うべき方法ではありません。両方とも、この回答を見てください。http://stackoverflow.com/a/6496013/2308683 –