Textview 文本旋转，倾斜，textview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;
}

}

styles 如下：

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

用法：

<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);

    }
}

附上效果图：