EditText输入表情图像
2014-03-20 20:01 kingshow 阅读(1322) 评论(0) 编辑 收藏 举报
EditText中添加表情图像。EditText是在开发当中经常用到的控件,大家都比较熟悉了,通过学习老罗的视频,在这里记录一下,以便以后方便查阅。
一、建立工程
二、activity_main.xml中代码
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <EditText android:id="@+id/edittext1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" /> <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="添加QQ表情" /> </LinearLayout>
三、MainActivity.java中的代码
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
package com.study.android_edittext; import java.lang.reflect.Field; import java.util.Random; import android.os.Bundle; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.text.Spannable; import android.text.SpannableString; import android.text.style.ImageSpan; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends Activity { private EditText editText; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText = (EditText)this.findViewById(R.id.edittext1); button = (Button)this.findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { int randomId = 1 + new Random().nextInt(9); try { Field field = R.drawable.class.getDeclaredField("face"+ randomId); int resourceId = Integer.parseInt(field.get(null).toString()); //在android中要显示图片信息,必须使用Bitmap位图的对象来装载 Bitmap bitmap = BitmapFactory.decodeResource(getResources(), resourceId); ImageSpan imageSpan = new ImageSpan(MainActivity.this,bitmap); SpannableString spannableString = new SpannableString("face"); spannableString.setSpan(imageSpan, 0, 4, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); editText.append(spannableString); } catch (Exception e) { // TODO: handle exception } } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
四、效果图
![](http://images0.cnblogs.com/i/559861/201403/222335061933832.jpg)