實現在edittext中任意插入圖片

Myedittext:

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對象，即所有插入的圖片
        Drawable d = getResources().getDrawable(id);
        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
        //用這個drawable對象代替字符串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);
    }
}

MyActivity:

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 = { "手機相冊", "相機拍攝" };
                AlertDialog dlg = new AlertDialog.Builder(MyActivity.this).setTitle("選擇圖片").setItems(items,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,int item) {
                                //這里item是根據選擇的方式,
                                //在items數組里面定義了兩種方式, 拍照的下標為1所以就調用拍照方法
                                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:
                    //獲得圖片的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){
                        //根據Bitmap對象創建ImageSpan對象
                        ImageSpan imageSpan = new ImageSpan(MyActivity.this, bitmap);
                        //創建一個SpannableString對象，以便插入用ImageSpan對象封裝的圖像
                        SpannableString spannableString = new SpannableString("[local]"+1+"[/local]");
                        //  用ImageSpan對象替換face
                        spannableString.setSpan(imageSpan, 0, "[local]1[local]".length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        //將選擇的圖片追加到EditText中光標所在位置
                        int index = e.getSelectionStart(); //獲取光標所在位置
                        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, "獲取圖片失敗", 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);
                        //根據Bitmap對象創建ImageSpan對象
                        ImageSpan imageSpan = new ImageSpan(MyActivity.this, bitmap);
                        //創建一個SpannableString對象，以便插入用ImageSpan對象封裝的圖像
                        SpannableString spannableString = new SpannableString("[local]"+1+"[/local]");
                        //  用ImageSpan對象替換face
                        spannableString.setSpan(imageSpan, 0, "[local]1[local]".length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        //將選擇的圖片追加到EditText中光標所在位置
                        int index = e.getSelectionStart(); //獲取光標所在位置
                        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, "獲取圖片失敗", Toast.LENGTH_SHORT).show();
                    }
                    break;
                default:
                    break;
            }
        }
    }
    /**
     * 圖片縮放
     * @param originalBitmap 原始的Bitmap
     * @param newWidth 自定義寬度
     * @return 縮放后的Bitmap
     */
    private Bitmap resizeImage(Bitmap originalBitmap, int newWidth, int newHeight){
        int width = originalBitmap.getWidth();
        int height = originalBitmap.getHeight();
        //定義欲轉換成的寬、高
//            int newWidth = 200;
//            int newHeight = 200;
        //計算寬、高縮放率
        float scanleWidth = (float)newWidth/width;
        float scanleHeight = (float)newHeight/height;
        //創建操作圖片用的matrix對象 Matrix
        Matrix matrix = new Matrix();
        // 縮放圖片動作
        matrix.postScale(scanleWidth,scanleHeight);
        //旋轉圖片 動作
        //matrix.postRotate(45);
        // 創建新的圖片Bitmap
        Bitmap resizedBitmap = Bitmap.createBitmap(originalBitmap,0,0,width,height,matrix,true);
        return resizedBitmap;
    }

}

XML：

<?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="插入圖片" />

</LinearLayout>