android_常用UI控件_02_EditText_01添加图片到edittext中

MainActivity.java
package com.example.android_editext_1face;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;import android.widget.Toast;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.edittext);        button = (Button) this.findViewById(R.id.button);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                // TODO Auto-generated method stub                int randomId = 1 + new Random().nextInt(1);                try {                    Toast.makeText(MainActivity.this, "Hello", 0);                    Field f = R.drawable.class.getDeclaredField("face"                            + randomId);                    int resourceId = Integer.parseInt(f.get(null).toString());                    // 在android中要想显示图片信息，必须使得Bitmap的对象来装载                    Bitmap bitmap = BitmapFactory.decodeResource(                            getResources(), resourceId);                    // ImageSpan                    ImageSpan p_w_picpathspan = new ImageSpan(MainActivity.this,                            bitmap);                    SpannableString spannablestring = new SpannableString(                            "face");                    spannablestring.setSpan(p_w_picpathspan, 0, 4,                            Spannable.SPAN_EXCLUSIVE_INCLUSIVE);                    // 添加内容到edittext中                    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;    }}
activity_main.xml
android_常用UI控件_02_EditText_01添加图片到edittext中_第1张图片
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