Android 文字傾斜

標籤：textview   android開發   傾斜   

有時候Android內建的控制項無法滿足我們的某些要求，這時就需要我們自訂控制項來實現這些功能。比如需要一個TextView裡的字傾斜一定的角度，就需要自訂TextView。

package com.leigo.ratatetextview;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.util.AttributeSet;import android.view.Gravity;import android.widget.TextView;/** * Created by Administrator on 2014/9/9. */public class RotateTextView extends TextView {    private static final int DEFAULT_DEGREES = 0;    private int mDegrees;    public RotateTextView(Context context) {        super(context, null);    }    public RotateTextView(Context context, AttributeSet attrs) {        super(context, attrs, android.R.attr.textViewStyle);        this.setGravity(Gravity.CENTER);        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RotateTextView);        mDegrees = a.getDimensionPixelSize(R.styleable.RotateTextView_degree, DEFAULT_DEGREES);        a.recycle();    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        setMeasuredDimension(getMeasuredWidth(), getMeasuredWidth());    }    @Override    protected void onDraw(Canvas canvas) {        canvas.save();        canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());        canvas.rotate(mDegrees, this.getWidth() / 2f, this.getHeight() / 2f);        super.onDraw(canvas);        canvas.restore();    }    public void setDegrees(int degrees) {        mDegrees = degrees;    }}

<?xml version="1.0" encoding="utf-8"?><resources>    <declare-styleable name="RotateTextView">        <attr name="degree" format="dimension" />    </declare-styleable></resources>

用法：

1.xml

<com.leigo.ratatetextview.RotateTextView        xmlns:app="http://schemas.android.com/apk/res-auto"        android:id="@+id/text"        android:text="@string/hello_world"        app:degree="10dp"        android:padding="10dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></span>

2.java

RotateTextView  mText = (RotateTextView) findViewById (R.id.text);mText.setDegrees(10);</span>

項目地址:

https://coding.net/u/leigo/p/RotateTextView/git

Android 文字傾斜