Java 获取错误:无法从静态上下文引用非静态方法“getResources()”
我正在使用Java在Android studio上开发一个rpg游戏,我在资源管理器中的Drawable中有png图片。我正在尝试将可绘制转换为位图,但出现了错误Java 获取错误:无法从静态上下文引用非静态方法“getResources()”,java,android,Java,Android,我正在使用Java在Android studio上开发一个rpg游戏,我在资源管理器中的Drawable中有png图片。我正在尝试将可绘制转换为位图,但出现了错误 import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; public clas
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
public class Player implements GameObject{
private int direction;
private boolean move;
public Player(int direction, boolean move){//constructior
this.direction = direction;
this.move = move;
Drawable myDrawable = MainActivity.getResources().getDrawable(R.drawable.down_standing);
Bitmap downStanding = ((BitmapDrawable) myDrawable).getBitmap();
}
@Override
public void draw(Canvas canvas){
}
@Override
public void update(){
}
public void update(int direction, boolean move){
this.direction = direction;
this.move = move;
}
}
至于主要活动:
import androidx.appcompat.app.AppCompatActivity;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Window;
import android.view.WindowManager;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
Constants.SCREEN_WIDTH = dm.widthPixels;
Constants.SCREEN_HEIGHT = dm.heightPixels;
setContentView(new GamePanel(this));
}
}
public Player(int direction, boolean move, Context context){ //constructior with Context
this.direction = direction;
this.move = move;
Drawable myDrawable = context.getResources().getDrawable(R.drawable.down_standing); // This is right
Bitmap downStanding = ((BitmapDrawable) myDrawable).getBitmap();
}
请帮忙。非常感谢 要调用getResources,您需要一个上下文引用,不能静态调用它,因此这是错误的:
MainActivity.getResources()
要实现这一点,您应该提供一个上下文参数,您可以从活动中获取该参数:
public Player(int direction, boolean move, Context context){ //constructior with Context
this.direction = direction;
this.move = move;
Drawable myDrawable = context.getResources().getDrawable(R.drawable.down_standing); // This is right
Bitmap downStanding = ((BitmapDrawable) myDrawable).getBitmap();
}