java试图在安卓中传递参数
因此,我有两个文件(MainActivity.java
和HomeFragment.java
),我试图将名为displayPromptForEnablingGPS
的public static void
从HomeFragment
传递到MainActivity
。这是密码
HomeFragment.java
(我试图传递的代码)
public static void displayPromptForEnablingGPS(
final Activity activity)
{
final AlertDialog.Builder builder =
new AlertDialog.Builder(activity);
final String action = Settings.ACTION_LOCATION_SOURCE_SETTINGS;
final String message = "Enable either GPS or any other location"
+ " service to find current location. Click OK to go to"
+ " location services settings to let you do so.";
builder.setMessage(message)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface d, int id) {
activity.startActivity(new Intent(action));
d.dismiss();
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface d, int id) {
d.cancel();
}
});
builder.create().show();
}
MainActivity.java
(我怎么称呼它)
public void showMainView() {
HomeFragment.displayPromptForEnablingGPS();
}
但我有个错误
"HomeFragment.displayPromptForEnablingGPS();" is invalid
# 1 楼答案
要调用的方法需要一个参数,但不能传递它
MainActivity中的方法应该如下所示: