如何扩展两个类，这样我可以设置视图的新活动 [英] how to extend two classes so that i may set a new activity in view
本文介绍了如何扩展两个类，这样我可以设置视图的新活动的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
嗨所以我尝试做一个游戏，点击红圈当另一个屏幕上弹出，并说他们失败了比赛。现在我明白自己是这样做我试图让我在主类中的公共静态方法，将的setContentView到其他屏幕的多种方法，但你不能作出这样的到一个静态的参考。因此，IM样的坚持，以什么做的。
公共类主要活动扩展{
DrawingView伏;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）; this.requestWindowFeature（Window.FEATURE_NO_TITLE）;
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
//的LinearLayout布局1 =新的LinearLayout（本）;
//的FrameLayout游戏=新的FrameLayout（本）;
DrawingView V =新DrawingView（本）; //会将myText的TextView =新的TextView（本）; // INT W = getResources（）getInteger（DrawingView.redColor）;
//按钮redCircle =（按钮）findViewById（W）; //redCircle.setWidth(300）;
//redCircle.setText(\"Start游戏）;
//layout1.addView(myText）;
// layout1.addView（redCircle）;
//redCircle.setLayoutParams(new的LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT））; //game.addView(myText）;
//game.addView(v）;
//game.addView(layout1）;
的setContentView（五）;
//redCircle.setOnClickListener((OnClickListener）本）;
}
公共无效的onClick（视图v）{
意向意图=新意图（这一点，Main.class）;
startActivity（意向）; //重新开始从游戏视角这一活动。添加this.finish（）;从堆栈中删除
} @覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
。getMenuInflater（）膨胀（R.menu.main，菜单）;
返回true;
} 公共静态无效onFailure处（）{
意向W =新意图（这一点，YouFailed.class）;
startActivity（重量）;
}
}
和这里是一个扩展视图类
公共类DrawingView扩展视图{ 公共DrawingView（上下文的背景下）{
超级（上下文）;
// TODO自动生成构造函数存根 }
RectF rectf =新RectF（0，0，200，0）; 私有静态最终诠释W = 100;
公共静态INT lastColor = Color.BLACK;
私人最终随机随机=新的随机（）;
私人最终涂料粉刷=新的油漆（）;
私人最终诠释半径= 230;
私人最终处理程序处理程序=新的处理程序（）;
公共静态INT redColor = Color.RED;
公共静态INT绿彩= Color.GREEN;
INT randomWidth = 0;
INT randomHeight = 0;
公共静态INT addPoints = 0; 私人最终可运行updateCircle =新的Runnable（）{
@覆盖
公共无效的run（）{
lastColor = random.nextInt（2）== 1？ redColor：绿彩;
paint.setColor（lastColor）;
无效（）;
handler.postDelayed（这一点，1000）; }
}; 私有对象startActivity; @覆盖
保护无效onAttachedToWindow（）{
super.onAttachedToWindow（）;
handler.post（updateCircle）;
} @覆盖
保护无效onDetachedFromWindow（）{
super.onDetachedFromWindow（）;
handler.removeCallbacks（updateCircle）;
} @覆盖
保护无效的onDraw（帆布油画）{
super.onDraw（画布）;
//你的其他的东西在这里
如果（随机== NULL）{
randomWidth =（INT）（random.nextInt（Math.abs（的getWidth（） - 半径/ 2））+半径/ 2F）;
randomHeight =（random.nextInt（（int）的Math.abs（（的getHeight（） - 半径/ 2 +半径/ 2F））））;
}其他{
randomWidth =（INT）（random.nextInt（Math.abs（的getWidth（） - 半径/ 2））+半径/ 2F）;
randomHeight =（random.nextInt（（int）的Math.abs（（的getHeight（） - 半径/ 2 +半径/ 2F））））;
} canvas.drawCircle（randomWidth，randomHeight +半径/ 2F，半径，油漆）;
} 公共布尔onTouch（视图V，MotionEvent事件）{
INT X =（int）的event.getX（）;
INT Y =（int）的event.getY（）;
如果（isInsideCircle（X，Y）== TRUE）{
//做你的东西在这里
如果（redColor == lastColor）{
Main.onFailure（）;
}其他{
addPoints ++;
}
}其他{ }
返回true;
}私人布尔isInsideCircle（INT X，int y）对{
如果（（（（X - randomWidth）*（X - randomWidth）+（（y）的 - randomHeight）*（Y - randomHeight）））≤（（半径）*（半径）））
返回true;
返回false;
} 公共接口FailureCallback {
公共无效onFailure处（）;
} 公共无效setOnFailure（对象startActivity）{
this.startActivity = startActivity;
}}
解决方案
您需要创建活动的新实例键，然后调用的setContentView 从它的参考。
Hi so im trying to make a game that when a red circle is clicked another screen pops up and says they have failed the game. Now as i understand their is multiple ways of doing this i have attempted to make a public static method in my main class that will setContentView to the other screen, but you cannot make that into a static reference. So im kind of stuck as to what to do.
public class Main extends Activity {
DrawingView v;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
//LinearLayout layout1 = new LinearLayout (this);
//FrameLayout game = new FrameLayout(this);
DrawingView v = new DrawingView (this);
//TextView myText = new TextView(this);
//int w = getResources().getInteger(DrawingView.redColor);
//Button redCircle = (Button) findViewById(w);
//redCircle.setWidth(300);
//redCircle.setText("Start Game");
//layout1.addView(myText);
// layout1.addView(redCircle);
//redCircle.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
//game.addView(myText);
//game.addView(v);
//game.addView(layout1);
setContentView(v);
//redCircle.setOnClickListener((OnClickListener) this);
}
public void onClick(View v) {
Intent intent = new Intent(this, Main.class);
startActivity(intent);
// re-starts this activity from game-view. add this.finish(); to remove from stack
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public static void onFailure(){
Intent w = new Intent(this, YouFailed.class);
startActivity(w);
}
}
and here is the class that extends view
public class DrawingView extends View{
public DrawingView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
RectF rectf = new RectF(0, 0, 200, 0);
private static final int w = 100;
public static int lastColor = Color.BLACK;
private final Random random = new Random();
private final Paint paint = new Paint();
private final int radius = 230;
private final Handler handler = new Handler();
public static int redColor = Color.RED;
public static int greenColor = Color.GREEN;
int randomWidth = 0;
int randomHeight = 0;
public static int addPoints = 0;
private final Runnable updateCircle = new Runnable() {
@Override
public void run() {
lastColor = random.nextInt(2) == 1 ? redColor : greenColor;
paint.setColor(lastColor);
invalidate();
handler.postDelayed(this, 1000);
}
};
private Object startActivity;
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
handler.post(updateCircle);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
handler.removeCallbacks(updateCircle);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// your other stuff here
if(random == null){
randomWidth =(int) (random.nextInt(Math.abs(getWidth()-radius/2)) + radius/2f);
randomHeight = (random.nextInt((int)Math.abs((getHeight()-radius/2 + radius/2f))));
}else {
randomWidth =(int) (random.nextInt(Math.abs(getWidth()-radius/2)) + radius/2f);
randomHeight = (random.nextInt((int)Math.abs((getHeight()-radius/2 + radius/2f))));
}
canvas.drawCircle(randomWidth, randomHeight + radius/2f, radius, paint);
}
public boolean onTouch(View v, MotionEvent event) {
int x = (int) event.getX();
int y = (int) event.getY();
if(isInsideCircle(x, y) == true){
//Do your things here
if(redColor == lastColor){
Main.onFailure();
} else {
addPoints++;
}
}else {
}
return true;
}
private boolean isInsideCircle(int x, int y){
if ((((x - randomWidth)*(x - randomWidth)) + ((y - randomHeight)*(y - randomHeight))) < ((radius)*(radius)))
return true;
return false;
}
public interface FailureCallback {
public void onFailure();
}
public void setOnFailure(Object startActivity){
this.startActivity = startActivity;
}
}
解决方案
You need to create a new instance of the Activity and and then call setContentView from it's reference.
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