在我的应用中，滑动手势的代码在模拟器上正常工作。但是当我在物理设备（Galaxy选项卡）上测试时，相同的代码崩溃了。我正在分享一些代码和日志猫的结果。任何帮助表示赞赏。
这是我的活动中实现滑动的类。
package com.example.testflashfile;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.view.MotionEvent;
import com.example.testflashfile.GlobalVariables;
public class MainActivity extends Activity
{
Button nextButton;
Button playButton;
Button backButton;
Context contextObject;
GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
setContentView(R.layout.activity_main);
ReadText readText=new ReadText(this);
TextView helloTxt = (TextView)findViewById(R.id.displaytext);
String fileName="textone";
helloTxt.setText(readText.readTxt(fileName));
gestureDetector = new GestureDetector(this.getApplicationContext(),new MyGestureDetector());
View mainview = (View) findViewById(R.id.mainView);
// Set the touch listener for the main view to be our custom gesture listener
mainview.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
return true;
}
return false;
}
});
playButton=(Button)findViewById(R.id.play);
playButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent startAnimation=new Intent(MainActivity.this,PlayAnimationActivity.class);
startAnimation.putExtra("SWF_NAME","a");
startActivity(startAnimation);
}
});
nextButton=(Button)findViewById(R.id.next);
nextButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(MainActivity.this,SecondActivity.class);
startActivity(intent);
}
});
backButton=(Button)findViewById(R.id.back);
backButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(MainActivity.this,FifthActivity.class);
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public class MyGestureDetector extends SimpleOnGestureListener
{
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if (Math.abs(e1.getY() - e2.getY()) > GlobalVariables.SWIPE_MAX_OFF_PATH) {
return false;
}
// right to left swipe
if(e1.getX() - e2.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {
Intent i= new Intent(MainActivity.this,SecondActivity.class);
startActivity(i);
// left to right swipe
} else if (e2.getX() - e1.getX() > GlobalVariables.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > GlobalVariables.SWIPE_THRESHOLD_VELOCITY) {
Intent i= new Intent(MainActivity.this,FifthActivity.class);
startActivity(i);
}
return false;
}
@Override
public boolean onDown(MotionEvent e) {
return true;
}
}
}
log cat结果是：
03-15 11:25:39.369: D/OpenGLRenderer(10179): Enabling debug mode 0
03-15 11:25:42.611: E/InputEventReceiver(10179): Exception dispatching input event.
03-15 11:25:42.611: D/AndroidRuntime(10179): Shutting down VM
03-15 11:25:42.611: W/dalvikvm(10179): threadid=1: thread exiting with uncaught exception (group=0x419442a0)
03-15 11:25:42.619: E/AndroidRuntime(10179): FATAL EXCEPTION: main
03-15 11:25:42.619: E/AndroidRuntime(10179): java.lang.IllegalArgumentException: pointerIndex out of range
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.MotionEvent.nativeGetAxisValue(Native Method)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.MotionEvent.getY(MotionEvent.java:2090)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.widget.ScrollView.onTouchEvent(ScrollView.java:848)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.View.dispatchTouchEvent(View.java:7340)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2181)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1914)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1929)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1929)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1929)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1929)
03-15 11:25:42.619: E/AndroidRuntime(10179): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2113)
03-15 11:25:42.619: E/AndroidRuntime(10179): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1466)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.app.Activity.dispatchTouchEvent(Activity.java:2468)
03-15 11:25:42.619: E/AndroidRuntime(10179): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2061)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.View.dispatchPointerEvent(View.java:7525)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3370)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3302)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4394)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4372)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4476)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4444)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4495)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.Choreographer.doFrame(Choreographer.java:523)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.os.Handler.handleCallback(Handler.java:615)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.os.Handler.dispatchMessage(Handler.java:92)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.os.Looper.loop(Looper.java:137)
03-15 11:25:42.619: E/AndroidRuntime(10179): at android.app.ActivityThread.main(ActivityThread.java:4895)
03-15 11:25:42.619: E/AndroidRuntime(10179): at java.lang.reflect.Method.invokeNative(Native Method)
03-15 11:25:42.619: E/AndroidRuntime(10179): at java.lang.reflect.Method.invoke(Method.java:511)
03-15 11:25:42.619: E/AndroidRuntime(10179): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
03-15 11:25:42.619: E/AndroidRuntime(10179): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
03-15 11:25:42.619: E/AndroidRuntime(10179): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：3)
mainview.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
return false;
}
return true;
}
});
这是正确的做法。它现在可以在设备上运行。但是我仍然不明白它是如何在模拟器上工作的。如果任何人都能解决这个问题请告诉我。 感谢。
答案 1 :(得分：0)
您将null作为输入传递给Read类中的readTxt(null);，而是在构造函数中发送文件名，并将文件名传递给readTxt，或者删除readTxt（null）阅读课程
答案 2 :(得分：0)
问题出在这里
public class ReadText {
Context context;
public ReadText(Context c) {
context = c;
readTxt(null);
}
null是java中的一个关键字..所以你需要首先更改你的assts文件夹（null.txt）的文件名，然后在你的代码中使用该文件名......