如何在android中最近添加的图像后右侧设置添加按钮？

Question

我想添加图像右侧的按钮（最近添加的图像）。

我使用下面的代码在点击按钮上添加一个按钮图像正在逐个添加上一个图像的右侧。

但我想添加按钮应该始终显示在先前添加的图像的右侧，然后单击然后图像应该出现在按钮的位置，按钮应该一次又一次出现在图像的右侧。

如下图所示

<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity" >



    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="onClick"
        android:text="Button"
        />



    <neeraj.com.images.PredicateLayout
        android:id="@+id/image_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp">
    </neeraj.com.images.PredicateLayout>









</LinearLayout>


public class MainActivity extends AppCompatActivity {
    PredicateLayout predicate;
    Button button1;


    @Override
    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.activity_main);
        //linearLayout1 = (GridLayout) findViewById(R.id.linearLayout1);
        predicate = (PredicateLayout) findViewById(R.id.image_container);
        button1 = (Button) findViewById(R.id.button1);





        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ImageView image = new ImageView(MainActivity.this);
                image.setBackgroundResource(R.mipmap.ic_launcher);
                predicate.addView(image);

            }
        });


    }


}

PredicateLayout

public class PredicateLayout extends ViewGroup {

    private int line_height;

    public PredicateLayout(Context context) {
        super(context);
    }

    public PredicateLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        assert (MeasureSpec.getMode(widthMeasureSpec) != MeasureSpec.UNSPECIFIED);

        final int width = MeasureSpec.getSize(widthMeasureSpec);

        // The next line is WRONG!!! Doesn't take into account requested MeasureSpec mode!
        int height = MeasureSpec.getSize(heightMeasureSpec) - getPaddingTop() - getPaddingBottom();
        final int count = getChildCount();
        int line_height = 0;

        int xpos = getPaddingLeft();
        int ypos = getPaddingTop();

        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() != GONE) {
                final LayoutParams lp = child.getLayoutParams();
                child.measure(
                        MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST),
                        MeasureSpec.makeMeasureSpec(height, MeasureSpec.UNSPECIFIED));

                final int childw = child.getMeasuredWidth();
                line_height = Math.max(line_height, child.getMeasuredHeight() + lp.height);

                if (xpos + childw > width) {
                    xpos = getPaddingLeft();
                    ypos += line_height;
                }

                xpos += childw + lp.width + 8;
            }
        }
        this.line_height = line_height;

        if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.UNSPECIFIED) {
            height = ypos + line_height;

        } else if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.AT_MOST) {
            if (ypos + line_height < height) {
                height = ypos + line_height;
            }
        }
        setMeasuredDimension(width, height + 20);
    }

    @Override
    protected LayoutParams generateDefaultLayoutParams() {
        return new LayoutParams(2, 2); // default of 1px spacing
    }

    @Override
    protected boolean checkLayoutParams(LayoutParams p) {
        return (p instanceof LayoutParams);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        final int count = getChildCount();
        final int width = r - l;
        int xpos = getPaddingLeft();
        int ypos = getPaddingTop();

        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() != GONE) {
                final int childw = child.getMeasuredWidth();
                final int childh = child.getMeasuredHeight();
                final LayoutParams lp =  child.getLayoutParams();
                if (xpos + childw > width) {
                    xpos = getPaddingLeft();
                    ypos += line_height;
                }
                child.layout(xpos, ypos, xpos + childw, ypos + childh);
                xpos += childw + lp.width + 8;
            }
        }
    }
}

Answer 1

你可以使用水平回收视图和imageview，并在点击图像后使用静态arraylist如果最后在arralist中添加+1并通知适配器你将得到你想要的。