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我试图制作一个按钮,点击它时会从一组卡中选取一张随机卡并将其显示到ImageView中。 要做到这一点,我有一个卡类他们的价值和他们的ID(图像卡名称绘制)。setImageResource导致应用程序崩溃
public class Carte {
int valeur;
static String nomCarte;
public Carte(int valeur, String nomImage) {
valeur = this.valeur;
nomCarte = this.nomCarte;
}
public static String getImageId() {
return nomCarte;
}
}
我对它们进行初始化的52到制表[],当按钮平局点击它挑选从标签[]一个随机的,我尝试再改变我的ImageView与采摘卡的图像获取卡的ID和使用setImageResource,但它使我的应用程序崩溃,你可以帮我吗?
这里是我的mainActivity代码:
public class MainActivity extends AppCompatActivity {
protected Carte tab[];
protected ImageView imageCarte;
protected Button afficherCarte;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageCarte = (ImageView) findViewById(R.id.imageCarte);
tab = new Carte[]{new Carte(1, "c_1"), new Carte(1, "d_1"), new Carte(1, "h_1"), new Carte(1, "s_1"),
new Carte(2, "c_2"), new Carte(2, "d_2"), new Carte(2, "h_2"), new Carte(2, "s_2"),
new Carte(3, "c_2"), new Carte(3, "d_3"), new Carte(3, "h_3"), new Carte(3, "s_3"),
new Carte(4, "c_4"), new Carte(4, "d_4"), new Carte(4, "h_4"), new Carte(4, "s_4"),
new Carte(5, "c_5"), new Carte(5, "d_5"), new Carte(5, "h_5"), new Carte(5, "s_5"),
new Carte(6, "c_6"), new Carte(6, "d_6"), new Carte(6, "h_6"), new Carte(6, "s_6"),
new Carte(7, "c_7"), new Carte(7, "d_7"), new Carte(7, "h_7"), new Carte(7, "s_7"),
new Carte(8, "c_8"), new Carte(8, "d_8"), new Carte(8, "h_8"), new Carte(8, "s_8"),
new Carte(9, "c_9"), new Carte(9, "d_9"), new Carte(9, "h_9"), new Carte(9, "s_9"),
new Carte(10, "c_10"), new Carte(10, "d_10"), new Carte(10, "h_10"), new Carte(10, "s_10"),
new Carte(11, "c_11"), new Carte(11, "d_11"), new Carte(11, "h_11"), new Carte(11, "s_11"),
new Carte(12, "c_12"), new Carte(12, "d_12"), new Carte(12, "h_12"), new Carte(12, "s_12"),
new Carte(13, "c_13"), new Carte(13, "d_13"), new Carte(13, "h_13"), new Carte(13, "s_13"),};
afficherCarte = (Button) findViewById(R.id.afficherCarte);
afficherCarte.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Random r = new Random();
int i1 = r.nextInt(53 - 1) + 1;
int id = getResources().getIdentifier(tab[i1].getImageId(), "drawable", getPackageName());
imageCarte.setImageResource(id);
}
});
}
}
这工作完美,我编辑此文件试图正确使用setImageResource和完成忘记了我为静态编辑。对于构造函数来说,这是我的一个基本错误,我的错误。非常感谢 ! – Rhohen
@Rhohen没问题。不要忘记接受答案。 –