如何初始化GridLayout的子视图

时间:2017-08-03 10:06:28

标签: java android android-studio android-gridlayout

如何初始化GridLayout的子项并在onClickListener中的多个ImageView元素上设置GridLayout以继续进行其他活动

这是我的java代码:

public class ResidentialActivity extends Activity {
    GridView grid;
    ImageView img1;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_residential);
        GridLayout grid= (GridLayout) findViewById(R.id.grid);
    }
}

1 个答案:

答案 0 :(得分:0)

这对我有用。我正在向GridLayout添加单元格并将OnClick侦听器连接到每个单元格。

如果您已经填充了GridLayout,则可以使用GridLayout.getChildCount()GridLayout.getChildAt(i)来操作每个单元格以添加OnClick侦听器。

您需要首先让您的ResidentialActivity实现View.OnClickListener,如下所示:

public class ResidentialActivity extends AppCompatActivity implements View.OnClickListener {

并覆盖OnClick()方法,如:

@Override
protected void onClick(final View view) {
. . .  launch your other activity in here
}

要连接onClick,您可以遍历单元格(可以使用GridLayout.getChildCount()):

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.game_layout);
    gridLayout = (GridLayout) findViewById(R.id.gl_puzzle);
    . . . 

    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    for (int i = 0; i < NUM_CELLS; i++) {
        RelativeLayout tmpCell = (RelativeLayout) inflater.inflate(R.layout.picture_cell, gridLayout, false);
        ImageView pic = tmpCell.findViewById(R.id.iv_cell_image);
        pic.setImageBitmap(pieces.get(i));
        tmpCell.setOnClickListener(this);
        gridLayout.addView(tmpCell);
    }

这是我的picture_cell

的xml布局文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/rl_cell"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
   <ImageView
      android:id="@+id/iv_cell_image"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="fill"
      android:background="@android:color/background_dark"
      android:minHeight="20dp"
      android:minWidth="20dp"
      android:padding="1dp" />
</RelativeLayout>