[英]How to Initialize child views for GridLayout
如何初始化GridLayout
子級並在GridLayout
存在的多個ImageView
元素上設置onClickListener
來進行其他活動
這是我的Java代碼:
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);
}
}
這對我有用。 我將單元格添加到GridLayout並將OnClick偵聽器連接到每個。
如果您已經填充了GridLayout,則可以使用GridLayout.getChildCount()
和GridLayout.getChildAt(i)
來操縱每個單元格以添加OnClick偵聽器。
您首先需要使ResidentialActivity實現View.OnClickListener,如下所示:
public class ResidentialActivity extends AppCompatActivity implements View.OnClickListener {
並重寫OnClick()方法,例如:
@Override
protected void onClick(final View view) {
. . . launch your other activity in here
}
要連接onClick,您可以遍歷單元格(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);
}
這是我的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>
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