Go语言视频零基础入门到精通

yy1020

    我们今天要学习的就是android游戏开发必须对手机的各个设备非常了解。其中最重要的设备之一就是触摸屏。所以我们这里重点研究触摸屏的单击。

       我们直接看代码吧。这里是触摸屏单击的测试代码：

java代码： package eoe.gamedev;



import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnTouchListener;

import android.widget.TextView;



public class SingleTouchTest extends Activity implements OnTouchListener{

StringBuilder builder = new StringBuilder();

TextView textView;

public void onCreate(Bundle state){

super.onCreate(state);

textView = new TextView(this);

textView.setText("Touch and Drag one finger");

textView.setOnTouchListener(this);

setContentView(textView);

}

public boolean onTouch(View arg0, MotionEvent arg1) {

builder.setLength(0);

switch(arg1.getAction()){

case MotionEvent.ACTION_DOWN: builder.append("down, ");

break;

case MotionEvent.ACTION_MOVE:

builder.append("move, ");

break;

case MotionEvent.ACTION_UP:

builder.append("up ,");

break;

case MotionEvent.ACTION_CANCEL:

builder.append("cancel, ");

break;

}

builder.append(arg1.getX());

builder.append(", ");

builder.append(arg1.getY());

Log.d("TouchTest",builder.toString());

textView.setText(builder.toString());

return true;

}



}
单击屏幕要实现OnTouchListener，实现public boolean onTouch(View arg0, MotionEvent arg1)方法。
MotionEvent有4个Action，分别是 MotionEvent.ACTION_DOWN, ACTION_UP, ACTION_MOVE, ACTION_CANCEL。

        意思分别是触摸屏按下，松开，移动，和取消。

java代码： <?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android=http://schemas.android.com/apk/res/android

package="eoe.gamedev"

android:versionCode="1"

android:versionName="1.0">



<uses-sdk android:minSdkVersion="10" />

<application

android:icon="@drawable/icon"

android:label="@string/app_name">

<activity

android:name=".AndroidBasis"

android:label="@string/app_name">

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>



<activity android:name=".LifeCycleTest" android:label="LifeCycleTest" android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".SingleTouchTest"

android:label="SingleTouchTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".MultiTouchTest"

android:label="MultiTouchTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".KeyTest"

android:label="KeyTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".AccelerometerTest"

android:label="AccelerometerTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".AssetsTest"

android:label="AssetsTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".ExternalStorageTest"

android:label="ExternalStorageTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".SoundPoolTest"

android:label="SoundPoolTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".MediaPlayerTest"

android:label="MediaPlayerTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".RenderViewTest"

android:label="RenderViewTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".BitmapTest"

android:label="BitmapTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

<activity

android:name=".FontTest"

android:label="FontTest"

android:screenOrientation="portrait" android:configChanges="keyboard|keyboardHidden|orientation">

</activity>

</application>

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

<uses-permission android:name="android.permission.RECORD_AUDIO"/>



</manifest>

njjwheu

看起来不错，收着了~~