小编Chi*_*nse的帖子

我想点击一个按钮,但它不起作用 - 似乎我需要使用,unproject()但我无法弄清楚如何.有问题的代码是:

Texture playButtonImage;
SpriteBatch batch;
ClickListener clickListener;
Rectangle playButtonRectangle;
Vector2 touchPos;
OrthographicCamera camera;

@Override
public void show() {
    playButtonImage = new Texture(Gdx.files.internal("PlayButton.png"));

    camera = new OrthographicCamera();
    camera.setToOrtho(false, 800, 480);
    batch = new SpriteBatch();

    playButtonRectangle = new Rectangle();
    playButtonRectangle.x = 400;
    playButtonRectangle.y = 250;
    playButtonRectangle.width = 128;
    playButtonRectangle.height = 64;
}

@Override
public void render(float delta) {
    Gdx.gl.glClearColor(0, 0, 0.2f, 1);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    camera.update();
    batch.setProjectionMatrix(camera.combined);

    batch.begin();
    batch.draw(playButtonImage, playButtonRectangle.x, playButtonRectangle.y);
    batch.end();

    if (Gdx.input.isTouched()) {
        Vector2 touchPos = new Vector2(); …

在尝试设置管理器进行片段事务时,我在主要活动中收到此错误.错误:

不兼容的类型,

必需:Android.Support.v4.app.FragmentManager.

找到:Android.app.FragmentManager

在这条线上:

FragmentManager manager=getFragmentManager();

主要活动的完整代码:

import android.app.Activity;
import android.app.FragmentTransaction;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.Fragment,
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.FragmentManager;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.widget.DrawerLayout;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity
    implements NavigationDrawerFragment.NavigationDrawerCallbacks {

private NavigationDrawerFragment mNavigationDrawerFragment;

private FrontFragment mFrontFragment;

private CharSequence mTitle;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);



    mNavigationDrawerFragment = (NavigationDrawerFragment)
            getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
    mTitle = getTitle(); …