我刚开始使用Android Studio进行一些简单的移动开发 该应用程序非常简单。在敲击或震动时它应该给出正面或负面反馈（某种随机决策支持） 不幸的是，它在开始后就停止了工作（“不幸的是”Soll ich？“停了下来。”）并且我不知道为什么。
我尝试在某些行中设置断点，但它们从未受到调试器的影响。我甚至找不到错误信息。
任何可能导致此类行为的想法？
以下是我的文件：
activity_main.xml中
<LinearLayout
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"
tools:context=".MainActivity"
android:clickable="true"
android:orientation="vertical"
android:gravity="center"
android:background="@color/background_material_dark"
android:onClick="onLayoutClick">
<TextSwitcher
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textSwitcher" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/should_i_question"
android:id="@+id/textView_main"
android:layout_gravity="center_horizontal"
android:textSize="60sp"
android:textColor="@color/primary_text_default_material_dark"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView" />
</TextSwitcher>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/hint0"
android:id="@+id/textView_sub"
android:layout_gravity="center"
android:textColor="@color/hint_foreground_material_dark" />
</LinearLayout>
MainActivity.java
package de.hermannoffen.sollich;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextSwitcher;
import android.widget.TextView;
import java.util.Random;
public class MainActivity extends ActionBarActivity implements SensorEventListener {
private static final int SHAKE_THRESHOLD = 600;
private final String[] gAnswers;
private long gLastUpdate = 0;
private Random gRandom;
private float gLast_x, gLast_y, gLast_z;
private TextSwitcher gTextSwitcher;
private SensorManager gSensorManager;
private Sensor gAccelerometer;
public MainActivity() {
gAnswers = getResources().getStringArray(R.array.answers);
gRandom = new Random();
}
private void calcAnswer() {
gTextSwitcher.setText(gAnswers[gRandom.nextInt(gAnswers.length)]);
TextView textView = (TextView) findViewById(R.id.textView_sub);
textView.setText(R.string.hintN);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gTextSwitcher = (TextSwitcher) findViewById(R.id.textSwitcher);
gTextSwitcher.setInAnimation(this, android.R.anim.fade_in);
gTextSwitcher.setOutAnimation(this, android.R.anim.fade_out);
gSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
gAccelerometer = gSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
gSensorManager.registerListener(this, gAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
}
protected void onPause() {
super.onPause();
gSensorManager.unregisterListener(this);
}
protected void onResume() {
super.onResume();
gSensorManager.registerListener(this, gAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
}
@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
long curTime = System.currentTimeMillis();
if ((curTime - gLastUpdate) > 100) {
long diffTime = (curTime - gLastUpdate);
gLastUpdate = curTime;
float speed = Math.abs(x + y + z - gLast_x - gLast_y - gLast_z)/ diffTime * 10000;
if (speed > SHAKE_THRESHOLD) {
calcAnswer();
}
gLast_x = x;
gLast_y = y;
gLast_z = z;
}
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public void onLayoutClick(View view) {
calcAnswer();
}
}
logcat的
01-24 14:55:07.381 24082-24092/de.hermannoffen.sollich I/art﹕ Debugger is active
01-24 14:55:07.570 24082-24082/de.hermannoffen.sollich I/System.out﹕ Debugger has connected
01-24 14:55:07.570 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:07.770 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:07.970 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:08.171 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:08.371 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:08.571 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:08.771 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:08.972 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:09.172 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:09.372 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:09.572 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:09.772 24082-24082/de.hermannoffen.sollich I/System.out﹕ waiting for debugger to settle...
01-24 14:55:09.973 24082-24082/de.hermannoffen.sollich I/System.out﹕ debugger has settled (1376)
答案 0 :(得分：1)
删除此
public MainActivity() {
gAnswers = getResources().getStringArray(R.array.answers);
gRandom = new Random();
}
将它们移至onCreate（）
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gAnswers = getResources().getStringArray(R.array.answers);
gRandom = new Random();
gTextSwitcher = (TextSwitcher) findViewById(R.id.textSwitcher);
//.....
}