android 高仿朋友圈title,Android 高仿微信朋友圈图片合并显示

因为图片显示的宽高是固定的 所以测量那没有做判断 用 MeasureSpec.EXACTLY

自己写的自定义view 比较一般 如果各位有其他好的想法 可以一起讨论下 不足的地方欢迎大家指正。

public class MergePictureView extends LinearLayout {

public static int MAX_WIDTH = 0;

private List imagesList = new ArrayList<>();

private int pxImagePadding = DiPUtils.dip2px(getContext(), 1);// 图片间的间距

private LayoutParams onePicPara; //一张图的宽高

private LayoutParams twoPicPara; //四张图的宽高

private LayoutParams threePicPare;// 四张图的宽 一张图的高

private LayoutParams fourPicPare;//一张图的宽 四张图的高

public MergePictureView(Context context) {

super(context);

}

public MergePictureView(Context context, @Nullable AttributeSet attrs) {

super(context, attrs);

}

public MergePictureView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

}

public void setImagesList(List imagesList) {

this.imagesList = imagesList;

initImageLayoutParams();

initView();

}

private void initImageLayoutParams() {

onePicPara = new LayoutParams(MAX_WIDTH, MAX_WIDTH);

twoPicPara = new LayoutParams(MAX_WIDTH / 2, MAX_WIDTH / 2);

threePicPare = new LayoutParams(MAX_WIDTH / 2, MAX_WIDTH);

fourPicPare = new LayoutParams(MAX_WIDTH, MAX_WIDTH / 2);

}

private void initView() {

this.setOrientation(HORIZONTAL);

this.removeAllViews();

ImageView imageViewOne;

ImageView imageViewTwo;

ImageView imageViewThree;

ImageView imageViewFour;

if (imagesList.size() == 1) {

imageViewOne = new ImageView(getContext());

imageViewOne.setLayoutParams(onePicPara);

imageViewOne.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(0)).into(imageViewOne);

addView(imageViewOne);

} else if (imagesList.size() == 2) {

imageViewOne = new ImageView(getContext());

imageViewOne.setLayoutParams(threePicPare);

imageViewOne.setPadding(0, 0, pxImagePadding, 0);

imageViewOne.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(0)).into(imageViewOne);

addView(imageViewOne);

imageViewTwo = new ImageView(getContext());

imageViewTwo.setLayoutParams(threePicPare);

imageViewTwo.setPadding(pxImagePadding, 0, 0, 0);

imageViewTwo.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(1)).into(imageViewTwo);

addView(imageViewTwo);

} else if (imagesList.size() == 3) {

imageViewOne = new ImageView(getContext());

imageViewOne.setLayoutParams(threePicPare);

imageViewOne.setPadding(0, 0, pxImagePadding, 0);

imageViewOne.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(0)).into(imageViewOne);

addView(imageViewOne);

LinearLayout linearLayout = new LinearLayout(getContext());

linearLayout.setOrientation(VERTICAL);

linearLayout.setLayoutParams(threePicPare);

linearLayout.setPadding(pxImagePadding, 0, 0, 0);

imageViewTwo = new ImageView(getContext());

imageViewTwo.setLayoutParams(twoPicPara);

imageViewTwo.setScaleType(ImageView.ScaleType.CENTER_CROP);

imageViewTwo.setPadding(0, 0, 0, pxImagePadding);

Glide.with(getContext()).load(imagesList.get(1)).into(imageViewTwo);

linearLayout.addView(imageViewTwo);

imageViewThree = new ImageView(getContext());

imageViewThree.setLayoutParams(twoPicPara);

imageViewThree.setPadding(0, pxImagePadding, 0, 0);

imageViewThree.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(2)).into(imageViewThree);

linearLayout.addView(imageViewThree);

addView(linearLayout);

} else if (imagesList.size() > 3) {

this.setOrientation(VERTICAL);

LinearLayout top = new LinearLayout(getContext());

top.setOrientation(HORIZONTAL);

top.setPadding(0, 0, 0, pxImagePadding);

top.setLayoutParams(fourPicPare);

imageViewOne = new ImageView(getContext());

imageViewOne.setLayoutParams(twoPicPara);

imageViewOne.setPadding(0, 0, pxImagePadding, 0);

imageViewOne.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(0)).into(imageViewOne);

top.addView(imageViewOne);

imageViewTwo = new ImageView(getContext());

imageViewTwo.setLayoutParams(twoPicPara);

imageViewTwo.setScaleType(ImageView.ScaleType.CENTER_CROP);

imageViewTwo.setPadding(pxImagePadding, 0, 0, 0);

Glide.with(getContext()).load(imagesList.get(1)).into(imageViewTwo);

top.addView(imageViewTwo);

addView(top);

LinearLayout bottom = new LinearLayout(getContext());

bottom.setOrientation(HORIZONTAL);

bottom.setLayoutParams(fourPicPare);

bottom.setPadding(0, pxImagePadding, 0, 0);

imageViewThree = new ImageView(getContext());

imageViewThree.setLayoutParams(twoPicPara);

imageViewThree.setPadding(0, 0, pxImagePadding, 0);

imageViewThree.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(2)).into(imageViewThree);

bottom.addView(imageViewThree);

imageViewFour = new ImageView(getContext());

imageViewFour.setLayoutParams(twoPicPara);

imageViewFour.setPadding(pxImagePadding, 0, 0, 0);

imageViewFour.setScaleType(ImageView.ScaleType.CENTER_CROP);

Glide.with(getContext()).load(imagesList.get(3)).into(imageViewFour);

bottom.addView(imageViewFour);

addView(bottom);

}

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

if(MAX_WIDTH==0){

MAX_WIDTH = measureWidth(widthMeasureSpec);

if (imagesList != null && imagesList.size() > 0) {

setImagesList(imagesList);

}

}

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

}

private int measureWidth(int measureSpec) {

int result = 0;

int specMode = MeasureSpec.getMode(measureSpec);

int specSize = MeasureSpec.getSize(measureSpec);

if (specMode == MeasureSpec.EXACTLY) {

// We were told how big to be

result = specSize;

} else {

// Measure the text

// result = (int) mTextPaint.measureText(mText) + getPaddingLeft()

// + getPaddingRight();

if (specMode == MeasureSpec.AT_MOST) {

// Respect AT_MOST value if that was what is called for by

// measureSpec

result = Math.min(result, specSize);

}

}

return result;

}