[英]how to access java class in android activity from putting it in a package?
我通过在另一个包中使用java类创建函数来在方法中调用它。
private void drawRegressionLine() {
//Toast.makeText(MainActivity.this, "Regression line view ", Toast.LENGTH_SHORT).show();
ArrayList<String> point = new ArrayList<String>();
Algorithm algorithm = new MaxLikelihood() {
point = c.KNN(point);
plot(point);
};`
package firstpackagename;
import secondpackagename.*; /*add other necessary imports*/
public class MainActivity extends Activity {@
Override public void onCreate(Bundle s) {
super.onCreate(s);
TheClassInOtherPackage X = new TheClassInOtherPackage(); /*If empty constructor used*/
Object o = X.methodInOtherpackage(params1, params2, ....); /*Replace this with X.methodInOtherpackage(...) if method returns voids. Replace object o with the proper return type*/
}
}
注意-您也可以通过向构造函数添加返回类型来返回值,就像方法一样。 希望这可以帮助。 :)
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