9

我有一个 Framelayout，它在运行时添加四个图像视图以及在中心它包含主图像，用户可以使用它执行不同的操作，但我面临旋转布局视图的问题

目前正在触摸旋转按钮，我正在这样做

public void setRotateListener() {
    mRotateImage.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            float x = event.getX(0);
            float y = event.getY(0);
            float theta = getTheta(x, y);

            switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_POINTER_DOWN:
                theta_old = theta;
                break;
            case MotionEvent.ACTION_MOVE:
                float delta_theta = theta - theta_old;
                theta_old = theta;
                int direction = (delta_theta > 0) ? 1 : -1;
                angle += 3 * direction;

                Log.d("Tag", "rotate angle : " + obj.getHeight());
                obj.setRotation(angle);
                notifyListener(direction);
                break;
            }
            return true;
        }
    });
}

private float getTheta(float x, float y) {
    float sx = x - (obj.getWidth() / 2.0f);
    float sy = y - (obj.getHeight() / 2.0f);

    float length = (float) Math.sqrt(sx * sx + sy * sy);
    float nx = sx / length;
    float ny = sy / length;
    float theta = (float) Math.atan2(ny, nx);

    final float rad2deg = (float) (180.0 / Math.PI);
    float thetaDeg = theta * rad2deg;

    return (thetaDeg < 0) ? thetaDeg + 360.0f : thetaDeg;
}

但我无法得到预期的结果我已经参考了这个链接 https://github.com/rprouse/XkcdClock 以及尝试用手势和动画旋转但它似乎没有按照我在屏幕上的移动工作触摸时，旋转按钮想要在两个方向时钟和逆时针旋转整个视图

4

1 回答 1

8

我设计了一个可以根据您的需要工作的布局。在此处下载演示

Java 文件

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Paint;
import android.view.GestureDetector;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.RelativeLayout;

public class ClipArt extends RelativeLayout {
    int baseh;
    int basew;
    int basex;
    int basey;
    ImageButton btndel;
    ImageButton btnrot;
    ImageButton btnscl;
    RelativeLayout clip;
    Context cntx;
    boolean freeze = false;
    int h;
    int i;
    ImageView image;
    String imageUri;
    boolean isShadow;
    int iv;
    RelativeLayout layBg;
    RelativeLayout layGroup;
    RelativeLayout.LayoutParams layoutParams;
    public LayoutInflater mInflater;
    int margl;
    int margt;
    float opacity = 1.0F;
    Bitmap originalBitmap;
    int pivx;
    int pivy;
    int pos;
    Bitmap shadowBitmap;
    float startDegree;
    String[] v;

    public ClipArt(Context paramContext) {
        super(paramContext);
        cntx = paramContext;
        layGroup = this;

        basex = 0;
        basey = 0;
        pivx = 0;
        pivy = 0;

        mInflater = ((LayoutInflater) paramContext.getSystemService("layout_inflater"));
        mInflater.inflate(R.layout.clipart, this, true);
        btndel = ((ImageButton) findViewById(R.id.del));
        btnrot = ((ImageButton) findViewById(R.id.rotate));
        btnscl = ((ImageButton) findViewById(R.id.sacle));
        
        layoutParams = new RelativeLayout.LayoutParams(250, 250);
        layGroup.setLayoutParams(layoutParams);
        image = ((ImageView) findViewById(R.id.clipart));
        image.setImageResource(R.drawable.ic_launcher);
    
        setOnTouchListener(new View.OnTouchListener() {
            final GestureDetector gestureDetector = new GestureDetector(ClipArt.this.cntx,
                    new GestureDetector.SimpleOnGestureListener() {
                public boolean onDoubleTap(MotionEvent paramAnonymous2MotionEvent) {
                    return false;
                }
            });

            public boolean onTouch(View paramAnonymousView, MotionEvent event) {
                if (!ClipArt.this.freeze) {
                    switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        layGroup.invalidate();
                        gestureDetector.onTouchEvent(event);

                        layGroup.performClick();
                        basex = ((int) (event.getRawX() - layoutParams.leftMargin));
                        basey = ((int) (event.getRawY() - layoutParams.topMargin));
                        break;
                    case MotionEvent.ACTION_MOVE:
                        int i = (int) event.getRawX();
                        int j = (int) event.getRawY();
                        layBg = ((RelativeLayout) getParent());
                        if ((i - basex > -(layGroup.getWidth() * 2 / 3))
                                && (i - basex < layBg.getWidth() - layGroup.getWidth() / 3)) {
                            layoutParams.leftMargin = (i - basex);
                        }
                        if ((j - basey > -(layGroup.getHeight() * 2 / 3))
                                && (j - basey < layBg.getHeight() - layGroup.getHeight() / 3)) {
                            layoutParams.topMargin = (j - basey);
                        }
                        layoutParams.rightMargin = -1000;
                        layoutParams.bottomMargin = -1000;
                        layGroup.setLayoutParams(layoutParams);
                        break;

                    }

                    return true;
                }
                return true;
            }
        });
        this.btnscl.setOnTouchListener(new View.OnTouchListener() {
            @SuppressLint({ "NewApi" })
            public boolean onTouch(View paramAnonymousView, MotionEvent event) {
                if (!ClipArt.this.freeze) {
                    int j = (int) event.getRawX();
                    int i = (int) event.getRawY();
                    layoutParams = (RelativeLayout.LayoutParams) layGroup.getLayoutParams();
                    switch (event.getAction()) {

                    case MotionEvent.ACTION_DOWN:
                        ClipArt.this.layGroup.invalidate();
                        ClipArt.this.basex = j;
                        ClipArt.this.basey = i;
                        ClipArt.this.basew = ClipArt.this.layGroup.getWidth();
                        ClipArt.this.baseh = ClipArt.this.layGroup.getHeight();
                        int[] loaction = new int[2];
                        layGroup.getLocationOnScreen(loaction);
                        margl = layoutParams.leftMargin;
                        margt = layoutParams.topMargin;
                        break;
                    case MotionEvent.ACTION_MOVE:

                        float f2 = (float) Math.toDegrees(Math.atan2(i - ClipArt.this.basey, j - ClipArt.this.basex));
                        float f1 = f2;
                        if (f2 < 0.0F) {
                            f1 = f2 + 360.0F;
                        }
                        j -= ClipArt.this.basex;
                        int k = i - ClipArt.this.basey;
                        i = (int) (Math.sqrt(j * j + k * k)
                                * Math.cos(Math.toRadians(f1 - ClipArt.this.layGroup.getRotation())));
                        j = (int) (Math.sqrt(i * i + k * k)
                                * Math.sin(Math.toRadians(f1 - ClipArt.this.layGroup.getRotation())));
                        k = i * 2 + ClipArt.this.basew;
                        int m = j * 2 + ClipArt.this.baseh;
                        if (k > 150) {
                            layoutParams.width = k;
                            layoutParams.leftMargin = (ClipArt.this.margl - i);
                        }
                        if (m > 150) {
                            layoutParams.height = m;
                            layoutParams.topMargin = (ClipArt.this.margt - j);
                        }
                        ClipArt.this.layGroup.setLayoutParams(layoutParams);
                        ClipArt.this.layGroup.performLongClick();
                        break;
                    }
                    return true;

                }
                return ClipArt.this.freeze;
            }
        });
        this.btnrot.setOnTouchListener(new View.OnTouchListener() {
            @SuppressLint({ "NewApi" })
            public boolean onTouch(View paramAnonymousView, MotionEvent event) {
                if (!ClipArt.this.freeze) {
                    layoutParams = (RelativeLayout.LayoutParams) ClipArt.this.layGroup.getLayoutParams();
                    ClipArt.this.layBg = ((RelativeLayout) ClipArt.this.getParent());
                    int[] arrayOfInt = new int[2];
                    layBg.getLocationOnScreen(arrayOfInt);
                    int i = (int) event.getRawX() - arrayOfInt[0];
                    int j = (int) event.getRawY() - arrayOfInt[1];
                    switch (event.getAction()) {

                    case MotionEvent.ACTION_DOWN:
                        ClipArt.this.layGroup.invalidate();
                        ClipArt.this.startDegree = layGroup.getRotation();
                        ClipArt.this.pivx = (layoutParams.leftMargin + ClipArt.this.getWidth() / 2);
                        ClipArt.this.pivy = (layoutParams.topMargin + ClipArt.this.getHeight() / 2);
                        ClipArt.this.basex = (i - ClipArt.this.pivx);
                        ClipArt.this.basey = (ClipArt.this.pivy - j);
                        break;

                    case MotionEvent.ACTION_MOVE:
                        int k = ClipArt.this.pivx;
                        int m = ClipArt.this.pivy;
                        j = (int) (Math.toDegrees(Math.atan2(ClipArt.this.basey, ClipArt.this.basex))
                                - Math.toDegrees(Math.atan2(m - j, i - k)));
                        i = j;
                        if (j < 0) {
                            i = j + 360;
                        }
                        ClipArt.this.layGroup.setRotation((ClipArt.this.startDegree + i) % 360.0F);
                        break;
                    }

                    return true;
                }
                return ClipArt.this.freeze;
            }
        });
        this.btndel.setOnClickListener(new View.OnClickListener() {
            public void onClick(View paramAnonymousView) {
                if (!ClipArt.this.freeze) {
                    layBg = ((RelativeLayout) ClipArt.this.getParent());
                    layBg.performClick();
                    layBg.removeView(ClipArt.this.layGroup);
                }
            }
        });
    }


    public void disableAll() {
        this.btndel.setVisibility(4);
        this.btnrot.setVisibility(4);
        this.btnscl.setVisibility(4);
    }

    public ImageView getImageView() {
        return this.image;
    }

    public void setFreeze(boolean paramBoolean) {
        this.freeze = paramBoolean;
    }
}

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent">
    <ImageButton android:id="@+id/rotate" android:layout_width="50dp" android:layout_height="50dp" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:adjustViewBounds="true" android:background="@android:color/transparent" android:scaleType="fitCenter" android:src="@drawable/rotation"/>
    <ImageButton android:id="@+id/sacle" android:layout_width="50dp" android:layout_height="50dp" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:adjustViewBounds="true" android:background="@android:color/transparent" android:scaleType="fitCenter" android:src="@drawable/pointer"/>
    <ImageButton android:id="@+id/del" android:layout_width="50dp" android:layout_height="50dp" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:adjustViewBounds="true" android:background="@android:color/transparent" android:scaleType="fitCenter" android:src="@drawable/close"/>
    <ImageView android:id="@+id/clipart" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="10dp"/>
    </RelativeLayout>

和图像放入可绘制

在此处输入图像描述 在此处输入图像描述 在此处输入图像描述

于 2015-09-03T09:16:09.307 回答