按下时如何全屏显示图像？

Question

我正在使用SlidingSplashScreen库在图像之间滑动并在图像下方显示小点以跟踪我正在显示的图像。所以我的问题是如何在按下时全屏显示图像？我已经尝试了@Haresh Chhelana 的以下解决方案，但没有奏效：public class MainActivity extends Activity {ImageView imageView;boolean isImageFitToScreen;@Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    imageView = (ImageView) findViewById(R.id.imageView);    imageView.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            if(isImageFitToScreen) {                isImageFitToScreen=false;                imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));                imageView.setAdjustViewBounds(true);            }else{                isImageFitToScreen=true;                imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));                imageView.setScaleType(ImageView.ScaleType.FIT_XY);            }        }    });  }}以下是我的代码，主要活动是：package com.hodhod.myapplication;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import com.chabbal.slidingdotsplash.SlidingSplashView;public class MainActivity extends AppCompatActivity {private int[] images = {        R.drawable.escapers,        R.drawable.escapers2,        R.drawable.facebook,        R.drawable.facebook};@Overrideprotected void onCreate(final Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    final SlidingSplashView slidingSplashView = (SlidingSplashView) findViewById(R.id.sliding_splash_view);    slidingSplashView.setImageResources(images);  }}

Answer 1

您必须在图像上添加 clickListener。像这样的事情：

@Override

public Object instantiateItem(@NonNull ViewGroup container, int position) {

  inflater = (LayoutInflater)activity.getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

  final View itemView = inflater.inflate(R.layout.viewpager_item, container,false);

  final ImageView image = (ImageView)itemView.findViewById(R.id.imageView);

  DisplayMetrics dis = new DisplayMetrics();

  activity.getWindowManager().getDefaultDisplay().getMetrics(dis);

  int height = dis.heightPixels;

  int width = dis.widthPixels;

  image.setMinimumHeight(height);

  image.setMinimumWidth(width);

  itemView.setOnClickListener(new OnClickListener(){

    public void onClick(View v){

        // here you can show the image in fullscreen

        // First method : use an hidden fullscreen Layout (like the first piece of code you've posted)

        // Second method : use an Activity

    }

  try {

    Picasso.with(activity.getApplicationContext())

            .load(images[position])

            .placeholder(R.mipmap.ic_launcher)

            .error(R.mipmap.ic_launcher)

            .into(image);

  }

  catch (Exception ex){

  }

  container.addView(itemView);

  return itemView;

}