Java 如何显示对话框片段?
嗨,我想知道当用户点击一个按钮时,我如何在屏幕上显示一个对话框 java文件Java 如何显示对话框片段?,java,android,android-dialogfragment,showdialog,Java,Android,Android Dialogfragment,Showdialog,嗨,我想知道当用户点击一个按钮时,我如何在屏幕上显示一个对话框 java文件 public class Example extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.example_layout);
public class Example extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.example_layout);
findViewById(R.id.exampleButton).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("Jomin","sdsd");
ExampleDialogFragment CallUs = new ExampleDialogFragment();
CallUs.getDialog();
}
});
}
}
这是示例DialogFragment java文件
public class ExampleDialogFragment extends android.support.v4.app.DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setCancelable(false); builder.setTitle(R.string.LogOutTitle).setMessage(R.string.LogOutMessage).setPositiveButton(R.string.LogOutPositive,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Uri number = Uri.parse("tel:0845 3000 116");
Intent callIntent = new Intent(Intent.ACTION_DIAL, number);
startActivity(callIntent);
}
});
AlertDialog dialog = builder.create();
return dialog;
}
}
那么,有人能告诉我,当用户单击ID为-exampleButton的按钮时,如何显示这个对话框吗 这是一个很好的指南:
我认为您必须将活动切换到FragmentActivity,并使用getSupportFragmentManager()重新设置getFragmentManager(),因为您的DialogFragment扩展了支持库中的版本;show(getSupportFragmentManager(),“call”);但是得到一个错误,说不能解析方法'getsupportfragmentmanager',我刚刚试过得到一个错误,说“不能解析方法”show(android.app.FragmentManager,java.lang.String)'”我没有读你说的所有内容,特别是您提到的从片段活动扩展它并用getsupportfragment Manager替换它的部分,我尝试了类似的方法,但没有帮助我修复它
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
// ...
public class FragmentDialogDemo extends FragmentActivity implements EditNameDialogListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
showEditDialog();
}
private void showEditDialog() {
FragmentManager fm = getSupportFragmentManager();
EditNameDialog editNameDialog = new EditNameDialog();
editNameDialog.show(fm, "fragment_edit_name");
}
}
callUs.show(getFragmentManager(), "SOME_TAG");