郑州app开发Android动态添加Fragment。布局代码一共需要建立三个，但是三个布局都是比较简单，只是用textview来显示文字的。在这里就不做展示了。
MainActivity.java
package cn.xhhkj.videoview;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import android.app.FragmentTransaction;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.MediaController;
import android.widget.VideoView;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "结果是";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int width = getWindowManager().getDefaultDisplay().getWidth();
int height = getWindowManager().getDefaultDisplay().getHeight();
Log.d(TAG,"宽度"+width+"高度"+height);
//FragmentManager manager = getFragmentManager();
FragmentManager manager = getSupportFragmentManager();
androidx.fragment.app.FragmentTransaction transaction = manager.beginTransaction();
// FragmentTransaction transaction = manager.beginTransaction();
Secondfragment second=new Secondfragment();
if(width>height){
transaction.replace(R.id.fragment_container,second);
}else {
transaction.replace(R.id.fragment_container,new Firstfragment());
}
transaction.commit();
}
}
Firstfragment.java
package cn.xhhkj.videoview;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
public class Firstfragment extends Fragment {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.fist_fragment,null);
return view;
}
}
Secondfragment.java
package cn.xhhkj.videoview;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
public class Secondfragment extends Fragment {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.second_fragment,null);
return view;
}
}
