在ViewPager中的Fragment添加控件及TextureView

在ViewPager中的Fragment添加控件及TextureView
首先做一个ViewPager，这是利用一个利用FragmentPagerAdapter制作的页面。
MainActivity:

package example.com.testtextureview;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.view.ViewPager;import java.util.ArrayList;import java.util.List;public class MainActivity extends FragmentActivity{    private ViewPager pager;    private List<String> titleList;    private List<Fragment> fragList;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.content_main);        titleList = new ArrayList<String>();        titleList.add("第1页");        titleList.add("第2页");        titleList.add("第3页");        titleList.add("第4页");        pager = (ViewPager) findViewById(R.id.pager);        fragList = new ArrayList<Fragment>();        fragList.add(new Fragment1());        fragList.add(new Fragment2());        fragList.add(new Fragment3());        fragList.add(new Fragment4());        tab = (PagerTabStrip) findViewById(R.id.tab);        tab.setBackgroundColor(Color.RED);        tab.setTextColor(Color.WHITE);        tab.setDrawFullUnderline(false);        tab.setTabIndicatorColor(Color.WHITE);        MyFragmentPagerAdapter adapter = new MyFragmentPagerAdapter(                getSupportFragmentManager(), fragList, titleList);        pager.setAdapter(adapter);    }}

适配器MyFragmentPagerAdapter:

package example.com.testtextureview;import java.util.List;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;public class MyFragmentPagerAdapter extends FragmentPagerAdapter{    private List<Fragment>fragList;    private List<String>titleList;    public MyFragmentPagerAdapter(FragmentManager fm,List<Fragment> fragList,List<String>titleList) {        super(fm);        this.fragList=fragList;        this.titleList=titleList;    }    @Override    public Fragment getItem(int arg0) {        return fragList.get(arg0);    }    @Override    public int getCount() {        return fragList.size();    }    @Override    public CharSequence getPageTitle(int position) {        return titleList.get(position);    }}

content_main.xml:

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"                xmlns:tools="http://schemas.android.com/tools"                android:layout_width="match_parent"                android:layout_height="match_parent"                tools:context="com.example.testviewpager.MainActivity">        <android.support.v4.view.ViewPager            android:id="@+id/pager"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center">            <android.support.v4.view.PagerTabStrip                android:id="@+id/tab"                android:layout_width="fill_parent"                android:layout_height="45dp"                android:layout_gravity="top"/>        </android.support.v4.view.ViewPager></RelativeLayout>

之后新建4个Fragment分别为Fragment1，Fragment2，Fragment3，Fragment4

现在我要在Fragment1中添加一个Button，
首先在xml中添加一个Button，
之后在Fragment1中代码为：

package example.com.testtextureview;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.Toast;/** * Created by bazinga on 2015/10/9. */public class Fragment1 extends Fragment implements View.OnClickListener{    private Button mButton;    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)    {        View view = inflater.inflate(R.layout.fragment1,null);        mButton = (Button) view.findViewById(R.id.btn);        mButton.setOnClickListener(this);        return view;    }    @Override    public void onClick(View view)    {        Toast.makeText(getActivity(), "start", Toast.LENGTH_SHORT).show();    }}

然后我想在Fragment2中获取一个Camera，在第二页中显示TextureView；

package example.com.testtextureview;import android.graphics.SurfaceTexture;import android.hardware.Camera;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.TextureView;import android.view.View;import android.view.ViewGroup;import android.widget.RelativeLayout;import java.io.IOException;/** * Created by bazinga on 2015/10/9. */public class Fragment2 extends Fragment implements TextureView.SurfaceTextureListener{    private Camera mCamera;    private TextureView mTextureView;    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)    {        RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);        RelativeLayout view = new RelativeLayout(getActivity());        view.setLayoutParams(lp);        mTextureView = new TextureView(getActivity());        mTextureView.setSurfaceTextureListener(this);        mTextureView.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT));        view.addView(mTextureView);        return view;    }    @Override    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height)    {        mCamera = Camera.open();        try        {            mCamera.setPreviewTexture(surface);            mCamera.startPreview();        } catch (IOException e)        {            e.printStackTrace();        }        mTextureView.setRotation(90);        mTextureView.setScaleX(2f);    }    @Override    public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int i, int i1)    {    }    @Override    public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture)    {        mCamera.stopPreview();        mCamera.release();        return true;    }    @Override    public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture)    {    }}

其中这里不需要有他自己的xml，因为这是由java代码创建，这是创建一个RelativeLayout布局，不需要获取Camera的宽度和高度，只需要将布局的宽高设置出来，将mTextureView添加进View中，设置监听。
在这里会出现摄像屏幕不能铺满整个屏幕的问题，这时候需要设置 mTextureView.setScaleX(2f);，才能将屏幕铺满，这应该是一个bug吧。