实现在edittext中任意插入图片

public class MyEditText extends EditText {
public MyEditText(Context context) {
super(context);
}
public MyEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void insertDrawable(int id) {
final SpannableString ss = new SpannableString("easy");
//得到drawable对象，即所有插入的图片
Drawable d = getResources().getDrawable(id);
d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
//用这个drawable对象代替字符串easy
ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);
//包括0但是不包括"easy".length()即：4。[0,4)
ss.setSpan(span, 0, "easy".length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
append(ss);
}
}

public class MyActivity extends Activity {
/** Called when the activity is first created. */
Button b;
MyEditText e;
private static final int PHOTO_SUCCESS = 1;
private static final int CAMERA_SUCCESS = 2;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.shangczp);
b = (Button) findViewById(R.id.myButton);
e = (MyEditText) findViewById(R.id.myEdit);
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final CharSequence[] items = { "手机相册", "相机拍摄" };
AlertDialog dlg = new AlertDialog.Builder(MyActivity.this).setTitle("选择图片").setItems(items,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int item) {
//这里item是根据选择的方式,
//在items数组里面定义了两种方式, 拍照的下标为1所以就调用拍照方法
if(item==1){
Intent getImageByCamera= new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(getImageByCamera, CAMERA_SUCCESS);
}else{
Intent getImage = new Intent(Intent.ACTION_GET_CONTENT);
getImage.addCategory(Intent.CATEGORY_OPENABLE);
getImage.setType("image/*");
startActivityForResult(getImage, PHOTO_SUCCESS);
}
}
}).create();
dlg.show();
//                e.insertDrawable(R.drawable.easy);
}
});
}

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
ContentResolver resolver = getContentResolver();
if (resultCode == RESULT_OK) {
switch (requestCode) {
case PHOTO_SUCCESS:
//获得图片的uri
Uri originalUri = intent.getData();
Bitmap bitmap = null;
try {
Bitmap originalBitmap = BitmapFactory.decodeStream(resolver.openInputStream(originalUri));
bitmap = resizeImage(originalBitmap, 200, 200);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if(bitmap != null){
//根据Bitmap对象创建ImageSpan对象
ImageSpan imageSpan = new ImageSpan(MyActivity.this, bitmap);
//创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
SpannableString spannableString = new SpannableString("[local]"+1+"[/local]");
//  用ImageSpan对象替换face
spannableString.setSpan(imageSpan, 0, "[local]1[local]".length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
//将选择的图片追加到EditText中光标所在位置
int index = e.getSelectionStart(); //获取光标所在位置
Editable edit_text = e.getEditableText();
if(index <0 || index >= edit_text.length()){
edit_text.append(spannableString);
}else{
edit_text.insert(index, spannableString);
}
}else{
Toast.makeText(MyActivity.this, "获取图片失败", Toast.LENGTH_SHORT).show();
}
break;
case CAMERA_SUCCESS:
Bundle extras = intent.getExtras();
Bitmap originalBitmap1 = (Bitmap) extras.get("data");
if(originalBitmap1 != null){
bitmap = resizeImage(originalBitmap1, 200, 200);
//根据Bitmap对象创建ImageSpan对象
ImageSpan imageSpan = new ImageSpan(MyActivity.this, bitmap);
//创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
SpannableString spannableString = new SpannableString("[local]"+1+"[/local]");
//  用ImageSpan对象替换face
spannableString.setSpan(imageSpan, 0, "[local]1[local]".length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
//将选择的图片追加到EditText中光标所在位置
int index = e.getSelectionStart(); //获取光标所在位置
Editable edit_text = e.getEditableText();
if(index <0 || index >= edit_text.length()){
edit_text.append(spannableString);
}else{
edit_text.insert(index, spannableString);
}
}else{
Toast.makeText(MyActivity.this, "获取图片失败", Toast.LENGTH_SHORT).show();
}
break;
default:
break;
}
}
}
/**
* 图片缩放
* @param originalBitmap 原始的Bitmap
* @param newWidth 自定义宽度
* @return 缩放后的Bitmap
*/
private Bitmap resizeImage(Bitmap originalBitmap, int newWidth, int newHeight){
int width = originalBitmap.getWidth();
int height = originalBitmap.getHeight();
//定义欲转换成的宽、高
//            int newWidth = 200;
//            int newHeight = 200;
//计算宽、高缩放率
float scanleWidth = (float)newWidth/width;
float scanleHeight = (float)newHeight/height;
//创建操作图片用的matrix对象 Matrix
Matrix matrix = new Matrix();
// 缩放图片动作
matrix.postScale(scanleWidth,scanleHeight);
//旋转图片 动作
//matrix.postRotate(45);
// 创建新的图片Bitmap
Bitmap resizedBitmap = Bitmap.createBitmap(originalBitmap,0,0,width,height,matrix,true);
return resizedBitmap;
}

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<com.example.edittext_pic.MyEditText
android:id="@+id/myEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />

<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="插入图片" />

</LinearLayout>