我有以下自定义属性:
<declare-styleable name="BoxGridLayout">
<attr name="numColumns" format="integer" />
<attr name="numRows" format="integer" />
<attr name="separatorWidth" format="dimension" />
<attr name="separatorColor" format="color" />
<attr name="equalSpacing" format="boolean" />
</declare-styleable>
在自定义 View 中我们可以获取自定义属性如下:
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.BoxGridLayout,
0,
defStyleAttr);
try {
mStrokeWidth = a.getDimensionPixelSize(R.styleable.BoxGridLayout_separatorWidth, DEFAULT_STROKE_WIDTH);
mStrokeColor = a.getColor(R.styleable.BoxGridLayout_separatorColor, DEFAULT_COLOR);
mColumnCount = a.getInteger(R.styleable.BoxGridLayout_numColumns, DEFAULT_COLUMN_COUNT);
mRowCount = a.getInteger(R.styleable.BoxGridLayout_numRows, DEFAULT_ROW_COUNT);
mEqualSpacing = a.getBoolean(R.styleable.BoxGridLayout_equalSpacing, DEFAULT_EQUAL_SPACING);
} finally {
a.recycle();
}
我们需要在 xml View 布局中设置它们:
<com.github.ali.android.client.customview.view.PadLayout
android:id="@+id/padLayout"
style="@style/PadLayoutStyle"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
custom:numColumns="3"
custom:numRows="4"
custom:separatorColor="@color/dialer_theme_color"
custom:separatorWidth="1dp">
我们如何在 java 代码中以编程方式设置这些自定义属性,而不是通过 xml 中的自定义命名空间?
最佳答案
可以使用LayoutParams。例如:
LinearLayout parent=new LinearLayout(this);
View child=new View(this);
float density =getResources().getDisplayMetrics().density;
LinearLayout.LayoutParams lllp=new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
lllp.setMargins((int) (10*density), (int) (10*density), (int) (10*density), (int) (10*density));
lllp.gravity=Gravity.CENTER;
child.setPadding((int) (10*density), (int) (10*density), (int) (10*density), (int) (10*density));
child.setLayoutParams(lllp);
parent.addView(child);
关于android - 在 Android 中以编程方式设置自定义属性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35699309/