在Android中使用PackageManager时出错

Question

我在一个Android应用程序中遇到了一个问题，我在使用PackageManager时遇到错误。

申请表如下：

Home.java

package com.main.home;

public class Home extends Activity
{
    //onclicking a Button say "send"
    send.onClickListener() 
    {
        public void onClick() {
            Intent i =new Intent();
            i.setClassName("com.main.home", "com.main.home.home1");
            startActivity(i); 
    }
}

Home1.java

package com.main.home;

import com.andr.resulting.Result ;

public class Home1 extends Activity  {
    EditText et=(EditText)findViewById(R.id.e1);
    //Clicking on forwardButton in that onClick()

    public void onClick()
    {
        String s[] = {e1.getText().toString(),""};
        //Calling a method in a class Result of another package which is not activity
        Result.finalfunc(Home1.this,s);

}

Result.java

package com.andr.resulting;   //different package

public class Result {
    public static void finalfunc(Activity act,String[] re) ...
    //Here I want to get the details of this particular class's package (com.andr.resulting) using PackageManager

    // I tried like this:
    Result.this.getPackageManager().getApplicationInfo(Result.getPackageName(),0))

我收到错误getPackageManager()在此类文件中不存在。

如何解决此问题？我将热切地等待有价值的回复。 在此先感谢。

Answer 1

试试这个::

this.getPackageManager().getApplicationInfo(this.getPackageName(), 0);

Answer 2

结果不像Activity类那样扩展Context。因此该方法在该类中不可用。您需要在其中调用act.getPackageManager()而不是this.getPackageManager()。