我在MainActivity中用它以前的xml代码编写了一个简单的代码,它可以成功运行。现在,我想制作一个片段并在该片段中运行MainActivity代码。我已经尝试了一切,即使通过结合两种代码等,但都是徒劳的。我在下面附加了我的MainActivity代码。这是我想在片段中使用的一个。我已经知道片段就像一个活动的子活动,并且都有单独的xmls,我也知道如何使用。只是无法将旧的应用程序中的MainActivity代码用作新应用程序中的FragmentActivity。
1),其需要以充当片段MainActivity代码从MainActivity到FragmentActivity产生代码问题
package com.ranatalha.userauthority;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
public class MainActivity
extends AppCompatActivity
implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener{
private TextView mytext;
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); //this is above two lines cox phly content set hoga tbi agy kam hna na
this.gestureDetector = new GestureDetector(this, this);
gestureDetector.setOnDoubleTapListener(this); }
//******************Upon clicking the button*************************
public void changetextshort(View v) {
mytext = (TextView) findViewById(R.id.mytext);
mytext.setText("Surpriseeee"); }
//******************initializing touch event*************************
@Override
public boolean onTouchEvent(MotionEvent event) {
this.gestureDetector.onTouchEvent(event);
return super.onTouchEvent(event);}
//******************Implements Methods from alt+ins(0) for touch properties*************************
@Override
public boolean onSingleTapConfirmed(MotionEvent motionEvent) {
mytext.setText("I tapped Once");
return false;}
@Override
public boolean onDoubleTap(MotionEvent motionEvent) {
mytext.setText("I tapped Twice");
return false;}
@Override
public boolean onDoubleTapEvent(MotionEvent motionEvent) {
mytext.setText("Double Tap Event Occurred");
return false;}
@Override
public boolean onDown(MotionEvent motionEvent) {
mytext.setText("Down goes");
return false;}
@Override
public void onShowPress(MotionEvent motionEvent) {
mytext.setText("I have pressed");}
@Override
public boolean onSingleTapUp(MotionEvent motionEvent) {
mytext.setText("Single Tap Up");
return false;}
@Override
public boolean onScroll(MotionEvent motionEvent, MotionEvent motionEvent1, float v, float v1) {
mytext.setText("I'm Scrolling");
return false;}
@Override
public void onLongPress(MotionEvent motionEvent) {
mytext.setText("I long pressed");}
@Override
public boolean onFling(MotionEvent motionEvent, MotionEvent motionEvent1, float v, float v1) {
mytext.setText("I FLINNGED");
return false; }
}
2)片段代码(MainActivity不具有任何的代码现在除了Mainactivity的像类名和OnCreate中代码的基本代码 - 虽然我已经在第3点中添加Mainactivity代码过于这就需要将实际上几乎就像当我们在做Android应用程序片段)
package com.ranatalha.userauthority;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.view.GestureDetector;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class TopSectionFragment extends Fragment {
public class Top
extends AppCompatActivity
implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener{
private TextView mytext;
private GestureDetector gestureDetector;
//******************Override method oncreateview for fragment*************************
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.top_section_fragment,container, false);
this.gestureDetector = new GestureDetector(this, this);
gestureDetector.setOnDoubleTapListener(this);
return view; //designing of top section fragment completed
}
//******************Upon clicking the button*************************
public void changetextshort(View v) {
mytext = (TextView) findViewById(R.id.mytext);
mytext.setText("Surpriseeee"); }
//******************initializing touch event*************************
@Override
public boolean onTouchEvent(MotionEvent event) {
this.gestureDetector.onTouchEvent(event);
return super.onTouchEvent(event);}
//******************Implements Methods from alt+ins(0) for touch properties*************************
@Override
public boolean onSingleTapConfirmed(MotionEvent motionEvent) {
mytext.setText("I tapped Once");
return false;}
@Override
public boolean onDoubleTap(MotionEvent motionEvent) {
mytext.setText("I tapped Twice");
return false;}
@Override
public boolean onDoubleTapEvent(MotionEvent motionEvent) {
mytext.setText("Double Tap Event Occurred");
return false;}
@Override
public boolean onDown(MotionEvent motionEvent) {
mytext.setText("Down goes");
return false;}
@Override
public void onShowPress(MotionEvent motionEvent) {
mytext.setText("I have pressed");}
@Override
public boolean onSingleTapUp(MotionEvent motionEvent) {
mytext.setText("Single Tap Up");
return false;}
@Override
public boolean onScroll(MotionEvent motionEvent, MotionEvent motionEvent1, float v, float v1) {
mytext.setText("I'm Scrolling");
return false;}
@Override
public void onLongPress(MotionEvent motionEvent) {
mytext.setText("I long pressed");}
@Override
public boolean onFling(MotionEvent motionEvent, MotionEvent motionEvent1, float v, float v1) {
mytext.setText("I FLINNGED");
return false; }
}
}
3)MainActivity代码(这将包括片段子活动)
package com.ranatalha.userauthority;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
public class MainActivity
extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); }
}
我编辑了我的问题,并添加了片段代码+ MainActivity代码,并附有一些解释。这可能会更有助于你了解我的问题:) –