可能会带来不必要的开销，但这样做是真的方便。这里把背景渐变、背景点击变色，字体点击变色都给弄好了，其他属性可以在获取到控件后再添加。
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.StateListDrawable;
import android.text.TextUtils;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import androidx.core.content.ContextCompat;
/**
* 作品人:create By android程序猿
*
* @author android
* note：
**/
@SuppressWarnings ( "unused" )
public class ViewBuilder {
/**
* 内间距
*/
private int padLeft, padRight, padTop, padBottom;
/**
* 外间距
*/
private int marLeft, marTop, marRight, marBottom;
/**
* 背景圆角值
*/
private int radiusLeftTop, radiusRightTop, radiusLeftBottom, radiusRightBottom;
/**
* 宽高
*/
private int width, height;
/**
* 背景色
*/
private int[] backColor;
/**
* 点击的颜色
*/
private int selectColor;
/**
* 边框的大小，颜色
*/
private int borderWidth, borderColor;
/**
* 权重
*/
private int weight;
/**
* 上下文
*/
private Context context;
/**
* 布局方式：0.ViewGroup；1.LinearLayout；2.RelativeLayout
*/
private int layoutType;
/**
* tag
*/
private Object tag;
/**
* 默认布局
*/
public static ViewBuilder builder ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 0;
builder.width = - 2;
builder.height = - 2;
return builder;
}
/**
* 默认布局
*/
public static ViewBuilder builder ( Context context, int width, int height ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 0;
builder.width = width;
builder.height = height;
return builder;
}
/**
* 默认布局
*/
public static ViewBuilder builder12 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 0;
builder.width = - 1;
builder.height = - 2;
return builder;
}
/**
* 默认布局
*/
public static ViewBuilder builder11 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 0;
builder.width = - 1;
builder.height = - 1;
return builder;
}
/**
* 线性布局
*/
public static ViewBuilder linBuilder ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 1;
builder.width = - 2;
builder.height = - 2;
return builder;
}
/**
* 线性布局
*/
public static ViewBuilder linBuilder ( Context context, int width, int height ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 1;
builder.width = width;
builder.height = height;
return builder;
}
/**
* 线性布局
*/
public static ViewBuilder linBuilder12 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 1;
builder.width = - 1;
builder.height = - 2;
return builder;
}
/**
* 线性布局
*/
public static ViewBuilder linBuilder11 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 1;
builder.width = - 1;
builder.height = - 1;
return builder;
}
/**
* 线性布局---------权重，横向权重
*/
public static ViewBuilder linBuilder01 ( Context context, int weight ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 1;
builder.width = 0;
builder.height = - 2;
builder.weight = weight;
return builder;
}
/**
* 相对布局
*/
public static ViewBuilder relBuilder ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 2;
builder.width = - 2;
builder.height = - 2;
return builder;
}
/**
* 相对布局
*/
public static ViewBuilder relBuilder ( Context context, int width, int height ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 2;
builder.width = width;
builder.height = height;
return builder;
}
/**
* 相对布局
*/
public static ViewBuilder relBuilder12 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 2;
builder.width = - 1;
builder.height = - 2;
return builder;
}
/**
* 相对布局
*/
public static ViewBuilder relBuilder11 ( Context context ) {
ViewBuilder builder = new ViewBuilder ( );
builder.context = context;
builder.layoutType = 2;
builder.width = - 1;
builder.height = - 12;
return builder;
}
public ViewBuilder pad ( int padLeft, int padTop,
int padRight, int padBottom ) {
this.padLeft = padLeft;
this.padTop = padTop;
this.padRight = padRight;
this.padBottom = padBottom;
return this;
}
public ViewBuilder mar ( int marLeft, int marTop,
int marRight, int marBottom ) {
this.marLeft = marLeft;
this.marTop = marTop;
this.marRight = marRight;
this.marBottom = marBottom;
return this;
}
public ViewBuilder radius ( int radiusLeftTop, int radiusRightTop,
int radiusLeftBottom, int radiusRightBottom ) {
this.radiusLeftTop = radiusLeftTop;
this.radiusRightTop = radiusRightTop;
this.radiusLeftBottom = radiusLeftBottom;
this.radiusRightBottom = radiusRightBottom;
return this;
}
public ViewBuilder radius ( int radius ) {
this.radiusLeftTop = radius;
this.radiusRightTop = radius;
this.radiusLeftBottom = radius;
this.radiusRightBottom = radius;
return this;
}
public ViewBuilder backs ( int... backColor ) {
this.backColor = backColor;
return this;
}
public ViewBuilder back ( int backColor ) {
this.backColor = new int[] { backColor };
return this;
}
public ViewBuilder back ( int backColor, int selectColor ) {
this.backColor = new int[] { backColor, selectColor };
this.selectColor = selectColor;
return this;
}
public ViewBuilder border ( int borderColor, int borderWidth ) {
this.borderColor = borderColor;
this.borderWidth = borderWidth;
return this;
}
public ViewBuilder tag ( Object tag ) {
this.tag = tag;
return this;
}
protected Float toFloat ( double per ) {
return Double.valueOf ( 1.6 * per ).floatValue ( );
}
protected int colorByRes ( int resId ) {
return ContextCompat.getColor ( context, resId );
}
protected void setLayout ( View target ) {
if ( layoutType == 0 ) {
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams ( width, height );
target.setLayoutParams ( params );
} else if ( layoutType == 1 ) {
LinearLayout.LayoutParams params;
if ( weight == 0 ) {
params = new LinearLayout.LayoutParams ( width, height );
} else {
params = new LinearLayout.LayoutParams ( width, height, weight );
}
params.setMargins ( marLeft, marTop, marRight, marBottom );
target.setLayoutParams ( params );
} else if ( layoutType == 2 ) {
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams ( width, height );
target.setLayoutParams ( params );
params.setMargins ( marLeft, marTop, marRight, marBottom );
target.setLayoutParams ( params );
}
target.setPadding ( padLeft, padTop, padRight, padBottom );
if ( tag != null ) {
target.setTag ( tag );
}
}
protected void setBackStyle ( View target ) {
if ( backColor != null ) {
float tl = toFloat ( radiusLeftTop );
float tr = toFloat ( radiusRightTop );
float bl = toFloat ( radiusLeftBottom );
float br = toFloat ( radiusRightBottom );
float[] radius = new float[] { tl, tl, tr, tr, br, br, bl, bl };
if ( backColor.length == 1 ) {
//设置普通背景
GradientDrawable normal = new GradientDrawable ( );
normal.setColor ( backColor[ 0 ] );
normal.setCornerRadii ( radius );
normal.setStroke ( borderWidth, borderColor );
target.setBackground ( normal );
} else if ( backColor.length == 2 ) {
target.setClickable ( true );
if ( selectColor != 0 ) {
//点击事件
GradientDrawable normal = new GradientDrawable ( );
normal.setColor ( backColor[ 0 ] );
normal.setCornerRadii ( radius );
normal.setStroke ( borderWidth, borderColor );
//
GradientDrawable select = new GradientDrawable ( );
select.setColor ( selectColor );
select.setCornerRadii ( radius );
select.setStroke ( borderWidth, borderColor );
//
StateListDrawable drawable = new StateListDrawable ( );
drawable.addState ( new int[] { android.R.attr.state_selected }, select );
drawable.addState ( new int[] { android.R.attr.state_pressed }, select );
drawable.addState ( new int[] { android.R.attr.state_enabled }, normal );
drawable.addState ( new int[] { }, normal );
target.setBackground ( drawable );
} else {
//处理渐变
GradientDrawable normal = new GradientDrawable (
GradientDrawable.Orientation.TOP_BOTTOM, backColor );
normal.setCornerRadii ( radius );
normal.setStroke ( borderWidth, borderColor );
StateListDrawable drawable = new StateListDrawable ( );
drawable.addState ( new int[] { android.R.attr.state_selected }, normal );
drawable.addState ( new int[] { android.R.attr.state_pressed }, normal );
drawable.addState ( new int[] { android.R.attr.state_enabled }, normal );
drawable.addState ( new int[] { }, normal );
target.setBackground ( normal );
}
}
}
}
public void setTextStyle ( View target, int color1, int color2 ) {
if ( ! ( target instanceof TextView ) ) {
return;
}
if ( backColor != null ) {
float tl = toFloat ( radiusLeftTop );
float tr = toFloat ( radiusRightTop );
float bl = toFloat ( radiusLeftBottom );
float br = toFloat ( radiusRightBottom );
float[] radius = new float[] { tl, tl, tr, tr, br, br, bl, bl };
if ( backColor.length == 1 ) {
//设置普通背景
GradientDrawable normal = new GradientDrawable ( );
normal.setColor ( backColor[ 0 ] );
normal.setCornerRadii ( radius );
normal.setStroke ( borderWidth, borderColor );
target.setBackground ( normal );
} else if ( backColor.length == 2 ) {
if ( selectColor != 0 ) {
//点击事件
GradientDrawable normal = new GradientDrawable ( );
normal.setColor ( backColor[ 0 ] );
normal.setCornerRadii ( radius );
normal.setStroke ( borderWidth, borderColor );
//
GradientDrawable select = new GradientDrawable ( );
select.setColor ( selectColor );
select.setCornerRadii ( radius );
select.setStroke ( borderWidth, borderColor );
//
StateListDrawable drawable = new StateListDrawable ( );
drawable.addState ( new int[] { android.R.attr.state_selected }, select );
drawable.addState ( new int[] { android.R.attr.state_pressed }, select );
drawable.addState ( new int[] { android.R.attr.state_enabled }, normal );
drawable.addState ( new int[] { }, normal );
target.setBackground ( drawable );
} else {
//处理渐变
GradientDrawable normal = new GradientDrawable (
GradientDrawable.Orientation.TOP_BOTTOM, backColor );
normal.setCornerRadii ( radius );
StateListDrawable drawable = new StateListDrawable ( );
drawable.addState ( new int[] { android.R.attr.state_selected }, normal );
drawable.addState ( new int[] { android.R.attr.state_pressed }, normal );
drawable.addState ( new int[] { android.R.attr.state_enabled }, normal );
drawable.addState ( new int[] { }, normal );
target.setBackground ( normal );
}
}
}
}
public LinearLayout createLinVer ( ) {
LinearLayout layout = new LinearLayout ( context );
setLayout ( layout );
layout.setOrientation ( LinearLayout.VERTICAL );
return layout;
}
public LinearLayout createLinHor ( ) {
LinearLayout layout = new LinearLayout ( context );
setLayout ( layout );
layout.setOrientation ( LinearLayout.HORIZONTAL );
return layout;
}
public TextView createTextView ( String text ) {
return createTextView ( text, Color.DKGRAY, 0 );
}
public TextView createTextView ( String text, int color ) {
return createTextView ( text, color, 0 );
}
public TextView createTextView ( String text, int foreColor1, int foreColor2 ) {
TextView tv = new TextView ( context );
setLayout ( tv );
setBackStyle ( tv );
if ( ! TextUtils.isEmpty ( text ) ) {
tv.setText ( text );
}
if ( foreColor2 != 0 ) {
ColorStateList colorStateList = new ColorStateList ( new int[][] {
{ - android.R.attr.state_pressed },
{ android.R.attr.state_pressed }
}, new int[] { foreColor1, foreColor2 } );
tv.setTextColor ( colorStateList );
} else {
tv.setTextColor ( foreColor1 );
}
return tv;
}
public EditText createEdt ( String text ) {
return createEdt ( text, null );
}
public EditText createEdt ( String text, String hint ) {
EditText edt = new EditText ( context );
setLayout ( edt );
setBackStyle ( edt );
edt.setTextSize ( 14f );
if ( ! TextUtils.isEmpty ( text ) ) {
edt.setText ( text );
}
if ( ! TextUtils.isEmpty ( hint ) ) {
edt.setHint ( hint );
}
return edt;
}
public ImageView createImageView ( ) {
ImageView iv = new ImageView ( context );
setLayout ( iv );
return iv;
}
}