NoteEdit.java
public class NoteEdit extends AppCompatActivity {
private EditText edit_content;
private Database DBHelper;
public int enter_state = 0;//用来区分是新建一个note还是更改原来的note
public String last_content;//用来获取edittext内容
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.editnote);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_edit);
setSupportActionBar(toolbar);
InitView();
}
private Bitmap resizeImage(Bitmap bitmap, int wid, int hei) {
Bitmap BitmapOrg = bitmap;
int width = BitmapOrg.getWidth();
int height = BitmapOrg.getHeight();
int newWidth = wid;
int newHeight = hei;
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
Bitmap resizeBipmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true);
return resizeBipmap;
}
private void InitView() {
edit_content = (EditText) findViewById(R.id.edit_content);
//fab_ok = (FloatingActionButton) findViewById(R.id.fab_ok);
DBHelper = new Database(this);
//获取此时时刻时间
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
String dateString = sdf.format(date);
//接收内容和id
Bundle myBundle = this.getIntent().getExtras();
last_content = myBundle.getString("info");
enter_state = myBundle.getInt("enter_state");
edit_content.setText(last_content);
}
@Override
protected void onPause() {
super.onPause();
SQLiteDatabase db = DBHelper.getReadableDatabase();
String content = edit_content.getText().toString();
if (enter_state == 0) {
if (!content.equals("")) {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
String dateString = sdf.format(date);
Bundle data = new Bundle();
data.putString("nei",content);
Intent intent = new Intent(NoteEdit.this,Display.class);
intent.putExtra("neirong",data);
ContentValues values = new ContentValues();
values.put("content", content);
values.put("date", dateString);
db.insert("note", null, values);
finish();
}
} else {
ContentValues values = new ContentValues();
values.put("content", content);
db.update("note", values, "content=?", new String[]{last_content});
finish();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_paint:
Intent getImage = new Intent(Intent.ACTION_PICK, null);
getImage.addCategory(Intent.CATEGORY_OPENABLE);
getImage.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
getImage.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(getImage, 1);
break;
}
return true;
}
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, intent);
ContentResolver resolver = getContentResolver();
if (resultCode == RESULT_OK) {
if (requestCode == 1) {
Uri originalUri = intent.getData();
try {
Bitmap originalBitmap = BitmapFactory.decodeStream(resolver
.openInputStream(originalUri));
Bitmap bitmap = resizeImage(originalBitmap, 100, 100);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
edit_content = (EditText) findViewById(R.id.edit_content);
insertIntoEditText(getBitmapMime(bitmap, originalUri));
}
}
}
private SpannableString getBitmapMime(int pic, Uri uri) {
String path = uri.getPath();
SpannableString ss = new SpannableString(path);
ImageSpan span = new ImageSpan(this, pic);
ss.setSpan(span, 0, path.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
return ss;
}
private void insertIntoEditText(SpannableString ss) {
Editable et = edit_content.getText();// 先获取Edittext中的内容
int start = edit_content.getSelectionStart();
et.insert(start, ss);// 设置ss要添加的位置
edit_content.setText(et);// 把et添加到Edittext中
edit_content.setSelection(start + ss.length());// 设置Edittext中光标在最后面显示
}
@Override
public void onStart() {
super.onStart();
}
@Override
public void onStop() {
super.onStop();
}
}
Display.java
public class Display extends AppCompatActivity{
EditText display;
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.display);
display = (EditText) findViewById(R.id.display);
String imagePath = getIntent().getBundleExtra("neirong").getString(
"nei");
SpannableString ss = new SpannableString(imagePath);
Pattern p=Pattern.compile("/mnt/sdcard/.+?\\.\\w{3}");
Matcher m=p.matcher(imagePath);
while(m.find()){
Bitmap bm = BitmapFactory.decodeFile(m.group());
Bitmap rbm = resizeImage(bm, 100, 100);
ImageSpan span = new ImageSpan(this, rbm);
ss.setSpan(span, m.start(), m.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
display.setText(ss);
}
private Bitmap resizeImage(Bitmap bitmap, int wid, int hei) {
Bitmap BitmapOrg = bitmap;
int width = BitmapOrg.getWidth();
int height = BitmapOrg.getHeight();
int newWidth = wid;
int newHeight = hei;
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
Bitmap resizeBipmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true);
return resizeBipmap;
}
}
为什么我在记事界面点击插入图片后程序崩溃了
错误日志：java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.android.providers.media.documents/document/image:37152 flg=0x1 }} to activity {com.example.mingnote/com.example.mingnote.NoteEdit}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.graphics.Rect android.graphics.drawable.Drawable.getBounds()' on a null object reference
