package com.example.zno4_textview2;import android.app.Activity; import android.app.ActionBar; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.os.Build; //--------------------------------- import android.graphics.Color; import android.widget.TextView; //--------------------------------- public class MainActivity extends Activity { private TextView myTxt; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (savedInstanceState == null) { getFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()).commit(); } //---------------------------- myTxt = (TextView) findViewById(R.id.text2); myTxt.setText("ajfijwofjowiejfoiewoi"); //myTxt.setTextColor(Color.BLUE); //myTxt.setTextSize(19); //---------------------------- } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } /** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment { public PlaceholderFragment() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView; } }}
难道是我下得Eclipse版本太高了?
/** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment {public PlaceholderFragment() { } private TextView myTxt; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_main, container, false); myTxt = (TextView) rootView.findViewById(R.id.text2); myTxt.setText("Hello World!"); return rootView; } }
- -怎么弄,求解,新手
放在里面或者删掉还是不行已试!!!!
import android.app.ActionBar;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
//---------------------------------
import android.graphics.Color;
import android.widget.TextView;
//---------------------------------
public class MainActivity extends Activity {
private TextView myTxt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); if (savedInstanceState == null) {
getFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
//----------------------------
myTxt = (TextView) findViewById(R.id.text2);
myTxt.setText("ajfijwofjowiejfoiewoi");
//myTxt.setTextColor(Color.BLUE);
//myTxt.setTextSize(19);
//----------------------------
} @Override
public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
} @Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
} /**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment { public PlaceholderFragment() {
} @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}}
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {public PlaceholderFragment() {
}
private TextView myTxt;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
myTxt = (TextView) rootView.findViewById(R.id.text2);
myTxt.setText("Hello World!");
return rootView;
}
}