图文混排

import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.ImageSpan;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity  {

    private EditText editShow;
    private ImageView imageView;
    int mImgViewWidth;
    float mInsertedImgWidth;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editShow = (EditText) findViewById(R.id.EditString);
        imageView = (ImageView) findViewById(R.id.cammer);
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent getImage = new Intent(Intent.ACTION_GET_CONTENT);
                getImage.addCategory(Intent.CATEGORY_OPENABLE);
                getImage.setType("image/*");
                startActivityForResult(getImage, 1);
            }
        });
        ViewTreeObserver vto = editShow.getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
            @Override
            public void onGlobalLayout() {
                editShow.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                mImgViewWidth = editShow.getWidth();
                mInsertedImgWidth = mImgViewWidth * 0.8f;
            }
        });
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            if (requestCode == 1) {
                if (data == null) {
                    Toast.makeText(this, "failed", Toast.LENGTH_SHORT).show();
                } else {
                    Uri uri = data.getData();
                    Bitmap bitmap = getOriginalBitmap(uri);
                    SpannableString ss = getBitmapMime(bitmap, uri);
                    insertIntoEditText(ss);
                }
            }
        }
    }
    private SpannableString getBitmapMime(Bitmap pic, Uri uri) {
        int imgWidth = pic.getWidth();
        int imgHeight = pic.getHeight();
        // 只对大尺寸图片进行下面的压缩，小尺寸图片使用原图
        if (imgWidth >= mInsertedImgWidth) {
            float scale = (float) mInsertedImgWidth / imgWidth;
            Matrix mx = new Matrix();
            mx.setScale(scale, scale);
            pic = Bitmap.createBitmap(pic, 0, 0, imgWidth, imgHeight, mx, true);
        }
        String smile = uri.getPath();
        SpannableString ss = new SpannableString(smile);
        ImageSpan span = new ImageSpan(this, pic);
        ss.setSpan(span, 0, smile.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        return ss;
    }
    private void insertIntoEditText(SpannableString ss) {
        // 先获取Edittext中原有的内容
        Editable et = editShow.getText();
        int start = editShow.getSelectionStart();
        // 设置ss要添加的位置
        et.insert(start, ss);
        // 把et添加到Edittext中
        editShow.setText(et);
        // 设置Edittext光标在最后显示
        editShow.setSelection(start + ss.length());
    }
    private Bitmap getOriginalBitmap(Uri photoUri) {
        if (photoUri == null) {
            return null;
        }
        Bitmap bitmap = null;
        try {
            ContentResolver conReslv = getContentResolver();
            // 得到选择图片的Bitmap对象
            bitmap = MediaStore.Images.Media.getBitmap(conReslv, photoUri);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bitmap;
    }

}

xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="chenshanshan.baway.com.tuwenhunpai.MainActivity">

    <EditText
        android:id="@+id/EditString"
        android:layout_width="match_parent"
        android:layout_height="100dp" />

    <ImageView
        android:layout_alignParentBottom="true"
        android:src="@mipmap/ic_launcher"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/cammer"/>

RelativeLayout>