Android TextView 设置字体大小的方法

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废话不多说了，直接给大家贴代码了，具体代码如下所示：

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									package com.example.yanlei.yl4;

									import android.graphics.Color;

									import android.os.Bundle;

									import android.support.v7.app.AppCompatActivity;

									import android.text.Spannable;

									import android.text.style.AbsoluteSizeSpan;

									import android.text.style.BackgroundColorSpan;

									import android.text.style.StyleSpan;

									import android.view.Menu;

									import android.view.MenuItem;

									import android.view.View;

									import android.widget.Button;

									import android.widget.EditText;

									import android.widget.TextView;

									public class MainActivity extends AppCompatActivity {

									TextView edit;

									Button sendBu;

									@Override

									protected void onCreate(Bundle savedInstanceState) {

									super.onCreate(savedInstanceState);

									setContentView(R.layout.activity_main);

									edit = (TextView) findViewById(R.id.textView);

									sendBu = (Button) findViewById(R.id.button);

									sendBu.setOnClickListener(new ButtonClickListener());

									}

									private class ButtonClickListener implements View.OnClickListener {

									public void onClick(View v) {

									//System.exit(0);

									edit.setText("闫磊我爱你");

									edit.setTextColor(Color.BLUE);

									edit.setText("这是我的第一个TextView，嘿嘿", TextView.BufferType.EDITABLE);

									/**

									* 要设置文本的背景色，

									* 必须将文本设置成BufferType.SPANNABLE,BufferType.EDITABLE

									*/

									Spannable sp = (Spannable) edit.getText();

									//设置红色背景

									sp.setSpan(new BackgroundColorSpan(Color.RED), 3, 8,

									Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

									sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC),

									0, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); //设置斜体

									sp.setSpan(new AbsoluteSizeSpan(80), 0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); //设置字体大小

									edit.setText(sp);

									//edit.setHeight(60);

									//android.os.Process.killProcess(android.os.Process.myPid());

									}

									}

									@Override

									public boolean onCreateOptionsMenu(Menu menu) {

									// Inflate the menu; this adds items to the action bar if it is present.

									getMenuInflater().inflate(R.menu.menu_main, menu);

									return true;

									}

									@Override

									public boolean onOptionsItemSelected(MenuItem item) {

									// Handle action bar item clicks here. The action bar will

									// automatically handle clicks on the Home/Up button, so long

									// as you specify a parent activity in AndroidManifest.xml.

									int id = item.getItemId();

									//noinspection SimplifiableIfStatement

									if (id == R.id.action_settings) {

									return true;

									}

									return super.onOptionsItemSelected(item);

									}

									}