Question

我是编程的开始，我需要你的帮助。我必须编写应用程序，它将显示传感器结果作为文本，我做错了方法（代码工作，但屏幕不滚动）。

下面我复制XML文件：

的

android:layout_width="wrap_content"
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=".MainActivity" >

<TextView
    android:id="@+id/rLight"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true" 
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/rPressure"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rLight"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/rHumidity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rPressure"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/rProximity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rHumidity"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/rTemp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rProximity"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rAccel"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rTemp"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rGyro"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rAccel"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rMag"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rGyro"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rRotation"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rMag"/>

 <TextView
    android:id="@+id/rGravity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rRotation"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/rSCounter"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rGravity"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rSDetector"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rSCounter"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rLinearAcc"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rSDetector"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rSignMotion"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rLinearAcc"
    android:textAppearance="?android:attr/textAppearanceMedium" />

 <TextView
    android:id="@+id/rNoise"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rSignMotion"
    android:textAppearance="?android:attr/textAppearanceMedium" />

的

这是主要课程：

公共类MainActivity extends Activity实现了EventListener，StepCounterListener，LinearAccListener，StepDetectorListener，LightSensorListener，PressureSensorListener，GravitySensorListener，RotationVectorListener，RelativeHumidityListener，ProximitySensorListener，TempSensorListener，AccelerometerSensorListener，GyroSensorListener，MagSensorListener {

private TextView lightText, pressureText, signText, noiseText, humidityText, linearAccText, proximityText, tempText, accelText, gyroText, magText, rotationText, gravityText, stepDetectorText, stepCounterText; private LightSensor mLightSensor; private PressureSensor mPressureSensor; private RelativeHumiditySensor mRelativeHumidity; private ProximitySensor mProximitySensor; private TemperatureSensor mTempSensor; private AccelerometerSensor mAccelSensor; private GyroscopeSensor mGyroSensor; private MagnetometerSensor mMagSensor; private RotationSensor mRotSensor; private GravitySensor mGravitySensor; private StepCounterSensor mStepCounter; private StepDetectorSensor mStepDetector; private LinearAccelerometer mLinearAcc; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lightText = (TextView)findViewById(R.id.rLight); pressureText = (TextView)findViewById(R.id.rPressure); humidityText = (TextView)findViewById(R.id.rHumidity); proximityText = (TextView)findViewById(R.id.rProximity); tempText = (TextView)findViewById(R.id.rTemp); accelText = (TextView)findViewById(R.id.rAccel); gyroText = (TextView)findViewById(R.id.rGyro); magText = (TextView)findViewById(R.id.rMag); rotationText = (TextView)findViewById(R.id.rRotation); gravityText = (TextView)findViewById(R.id.rGravity); stepCounterText = (TextView)findViewById(R.id.rSCounter); stepDetectorText = (TextView)findViewById(R.id.rSDetector); linearAccText = (TextView)findViewById(R.id.rLinearAcc); signText = (TextView)findViewById(R.id.rSignMotion); noiseText = (TextView)findViewById(R.id.rNoise); mLightSensor = new LightSensor(getBaseContext()); mLightSensor.setListener(this); mPressureSensor = new PressureSensor(getBaseContext()); mPressureSensor.setListener(this); mRelativeHumidity = new RelativeHumiditySensor(getBaseContext()); mRelativeHumidity.setListener(this); mProximitySensor = new ProximitySensor(getBaseContext()); mProximitySensor.setListener(this); mTempSensor = new TemperatureSensor(getBaseContext()); mTempSensor.setListener((TempSensorListener) this); [...] } public void onLightSensorChanged(String lux){ lightText.setText("LIGHT level: " + lux); } public void onPressureSensorChanged(String pressure){ //items.add("PRESSURE: " + pressure); pressureText.setText("PRESSURE: " + pressure); }

[...] 的

我尝试使用ArrayString，listAdapter，但我总是遇到很多错误..请帮忙

Answer 1

<?xml version="1.0" encoding="UTF-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">
        <TextView
            android:id="@+id/rLight"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/rPressure"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        .....................

    </LinearLayout>
</ScrollView>

Answer 2

你需要使用一个scrollview，只需在它之前插入你的XML内容，它应该工作：

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ScrollView
        android:id="@+id/scrollView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >


    </ScrollView>

</LinearLayout>

如何将很多textview更改为滚动列表布局

2 个答案: