实验内容：关于线性布局、约束布局及表格布局的使用
主要代码：
主界面：
btn_ll = findViewById(R.id.btn_ll);
btn_cl = findViewById(R.id.btn_cl);
btn_tl = findViewById(R.id.btn_tl);
private void setListeners() {
OnClick onClick = new OnClick();
btn_ll.setOnClickListener(onClick);
btn_cl.setOnClickListener(onClick);
btn_tl.setOnClickListener(onClick);
}
private class OnClick implements View.OnClickListener {
Intent intent;
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_ll :
intent = new Intent(MainActivity.this,LinearLayoutActivity.class);
break;
case R.id.btn_cl :
intent = new Intent(MainActivity.this,ConstraintLayoutActivity.class);
break;
case R.id.btn_tl :
intent = new Intent(MainActivity.this,TableLayoutActivity.class);
break;
}
startActivity(intent);
}
}
线性布局：
<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"
android:background="@color/colorBlack"
tools:context=".LinearLayoutActivity"
android:padding="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="One,One"
android:textSize="18sp"
android:textColor="@color/colorGrey"
android:textAllCaps="false"
android:background="@drawable/shape_button"
android:layout_marginRight="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="One,Two"
android:textSize="18sp"
android:textColor="@color/colorGrey"
android:textAllCaps="false"
android:background="@drawable/shape_button"
android:layout_marginRight="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="One,Three"
android:textSize="18sp"
android:textColor="@color/colorGrey"
android:textAllCaps="false"
android:background="@drawable/shape_button"
android:layout_marginRight="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="One,Four"
android:textSize="18sp"
android:textColor="@color/colorGrey"
android:textAllCaps="false"
android:background="@drawable/shape_button" />
</LinearLayout>
...
...
</LinearLayout>
约束布局：
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorBlack"
android:minHeight="0dp"
tools:context=".ConstraintLayoutActivity">
<Button
android:id="@+id/bt_red"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="344dp"
android:background="@color/colorRed"
android:text="Red"
android:textSize="25sp"
app:layout_constraintBottom_toBottomOf="@+id/bt_orange"
app:layout_constraintEnd_toStartOf="@+id/bt_orange"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/bt_orange"
app:layout_constraintVertical_bias="0.0" />
...
...
</android.support.constraint.ConstraintLayout>
表格布局：
...
<TableRow>
<TextView
android:paddingLeft="20dp"
android:text="@string/open"
android:textSize="25sp"
android:textColor="@color/colorGrey"
android:layout_column="0"/>
<TextView
android:text="Ctrl-O"
android:textSize="25sp"
android:textColor="@color/colorGrey"
android:layout_column="2"
android:gravity="right"/>
</TableRow>
...
...
<TableRow>
<View android:layout_height="3dp"
android:background="@color/colorGrey"/>
<View android:layout_height="3dp"
android:background="@color/colorGrey"
android:layout_column="2"/>
</TableRow>
...
截图：
①总界面：
image
②线性布局：
image
③约束布局：
image
④表格布局：
image
