Textview 文本旋转，倾斜

有时候Android自带的控件无法满足我们的某些要求，这时就需要我们自定义控件来实现这些功能。比如需要一个TextView里的字倾斜一定的角度，就需要自定义TextView。

代码如下：

package com.android.textviewrotatedemo;

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 zhenxixianzai on 2015/5/5.
 */
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;
	}
}

<declare-styleable name="RotateTextView">
        <attr name="degree" format="dimension" />
    </declare-styleable>

<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" >

    <com.android.textviewrotatedemo.RotateTextView
        android:id="@+id/ceshi"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:autoLink="all"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="http://blog.csdn.net/u014649598" />
    <com.android.textviewrotatedemo.RotateTextView
        android:id="@+id/ceshi1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:autoLink="all"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="测试测试测试" />
    <com.android.textviewrotatedemo.RotateTextView
        android:id="@+id/ceshi2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:autoLink="all"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="测试测试测试" />
    <com.android.textviewrotatedemo.RotateTextView
        android:id="@+id/ceshi3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:autoLink="all"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="测试测试测试4" />
    <com.android.textviewrotatedemo.RotateTextView
        android:id="@+id/ceshi4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:autoLink="all"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="测试测试测试" />


</LinearLayout>

Java 部分：

package com.android.textviewrotatedemo;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {
	private RotateTextView mTextView;
	private RotateTextView mTextView1;
	private RotateTextView mTextView2;
	private RotateTextView mTextView3;
	private RotateTextView mTextView4;
	private RotateTextView mTextView5;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		mTextView = (RotateTextView) findViewById(R.id.ceshi);
		mTextView.setDegrees(10);
		mTextView1 = (RotateTextView) findViewById(R.id.ceshi1);
		mTextView1.setDegrees(350);
		mTextView2 = (RotateTextView) findViewById(R.id.ceshi2);
		mTextView2.setDegrees(180);
		mTextView3 = (RotateTextView) findViewById(R.id.ceshi3);
		mTextView3.setDegrees(90);
		mTextView4 = (RotateTextView) findViewById(R.id.ceshi4);
		mTextView4.setDegrees(290);

	}
}

Demo下载地址：

http://download.csdn.net/detail/u014649598/8673131

项目地址:

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

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