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A viewgroup enable custom size of childviews and change their position which has same size by drag

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Analyze

FreeSizeDraggableLayout 实现过程解析

Demo

Download Demo

Usage

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Gradle

dependencies {
   compile 'com.miao:freesizedraggablelayout:0.0.2'
}

Maven

<dependency>
  <groupId>com.miao</groupId>
  <artifactId>freesizedraggablelayout</artifactId>
  <version>0.0.2</version>
  <type>pom</type>
</dependency>

Use it in your own code:

1.create the viewgroup on your xml:

    <com.miao.freesizedraggablelayout.FreeSizeDraggableLayout
        android:id="@+id/fsd_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

2.set the viewgroup and set the size of it

FreeSizeDraggableLayout fsdLayout = (FreeSizeDraggableLayout) findViewById(R.id.fsd_layout);
fsdLayout.setUnitWidthNum(4);
fsdLayout.setUnitHeightNum(4);

3.create a DetailView list:

List<DetailView> list = new ArrayList<>();
/*
DetailView:
public DetailView(Point p, int width, int height, View v) {
    setPoint(p);
    setWidhtNum(width);
    setHeightNum(height);
    setView(v);
}
*/
list.add(new DetailView(new Point(0, 0), 2, 2, createButton(1)));
list.add(new DetailView(new Point(2, 0), 2, 2, createButton(2)));
list.add(new DetailView(new Point(0, 2), 2, 2, createButton(3)));
list.add(new DetailView(new Point(2, 2), 2, 2, createButton(4)));
/*
private Button createButton(int i) {
    final Button btn = new Button(getApplicationContext());
    btn.setText("Button - " + i);
    btn.setBackgroundColor(Color.BLACK);
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(getApplicationContext(), btn.getText(), Toast.LENGTH_SHORT).show();
        }
    });
    return btn;
}
*/

4.set the list as ViewGroup's datasource

freeSizeDraggableLayout.setList(list);

PS: Function of change position between group position and draggled item(in v0.0.1, we can just change two view has the same size, we can change the position of whole group of views and the view dragged if they have the same size in v0.0.2. just like the third scenario in demo) is added in version 0.0.2, set it disable if you don't need it:

freeSizeDraggableLayout.setGroupChangeEnable(false);