Android dynamically adds a line feed

Android dynamically adds a line feed

Add images dynamically in the project and wrap the text. At first I wanted to use the GridView, but it was useless. Why did I forget it. Below I will record my implementation methods.

See the code xml:

Activity:

Package org.cn. ruimit. pic; import java. io. fileInputStream; import java. io. fileNotFoundException; import java. util. arrayList; import org.cn. ruimit. r; import android. content. intent; import android. database. cursor; import android. graphics. bitmapFactory; import android.net. uri; import android. OS. bundle; import android. provider. mediaStore; import android. view. view; import android. view. view. onClickListener; import android. widget. imageView; import android. widget. imageView. scaleType; import android. widget. linearLayout; import android. widget. linearLayout. layoutParams; import com. china. hunbohui. baseActivity; import com. china. hunbohui. IApplication;/*** @ author wangjing */public class AddPicAty extends BaseActivity {private static final int SEL_PIC = 1; private LinearLayout linearLayout = null; private ArrayList
 
  
ImageBeans; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. add_pic_lay); initView ();} private void initView () {imageBeans = new ArrayList (); linearLayout = (LinearLayout) findViewById (R. id. linearlayout); findViewById (R. id. button1 ). setOnClickListener (new OnClickListener () {@ Overridepublic void onClick (View v) {// select Intent intent = new Intent (Intent. ACTION_GET_CONTENT); // "android. intent. action. GET_CONTENT "// intent. addCategory (Intent. CATEGORY_OPENABLE); intent. setType ("image/*"); startActivityForResult (intent, SEL_PIC) ;}}) ;}@ Overrideprotected void onActivityResult (int requestCode, int resultCode, Intent data) {super. onActivityResult (requestCode, resultCode, data); if (resultCode = RESULT_ OK) {if (requestCode = SEL_PIC) {Uri uri = data. getData (); String [] proj = {MediaStore. images. media. DATA}; Cursor cursor = managedQuery (uri, proj, null); // according to my personal understanding, this is to obtain the index value of the selected image int column_index = cursor. getColumnIndexOrThrow (MediaStore. images. media. DATA); // move the cursor to the beginning. This is very important, and it is easy to cause excessive cursor. moveToFirst (); // obtain the image path String path = cursor Based on the index value. getString (column_index); ImageBean bean = new ImageBean (); bean. setPath (path); imageBeans. add (bean); updateLayout () ;}}/ *** update Image Layout */private void updateLayout () {LinearLayout ll_horizontal = null; linearLayout. removeAllViews (); for (int I = 0; I <imageBeans. size (); I ++) {if (I % 4 = 0) {ll_horizontal = new LinearLayout (context); ll_horizontal.setOrientation (LinearLayout. HORIZONTAL); linearLayout. addView (ll_horizontal);} ImageView img = new ImageView (context); setImgLayoutParams (img); setImageBitmap (img, imageBeans. get (I ). getPath (); ll_horizontal.addView (img);}/*** set imageview size */private void setImgLayoutParams (ImageView img) {// LayoutParams lp = (LayoutParams) img. getLayoutParams (); LayoutParams lp = new LayoutParams (0, 0); lp. width = (int) (IApplication. with-20 * IApplication. dencity-3*5 * IApplication. dencity)/4); lp. height = lp. width; lp. rightMargin = (int) (5 * IApplication. dencity); lp. bottomMargin = (int) (5 * IApplication. dencity); img. setLayoutParams (lp); img. setScaleType (ScaleType. CENTER_CROP);}/*** set image for imageview */private void setImageBitmap (ImageView img, String url) {try {FileInputStream FD = new FileInputStream (url); img. setImageBitmap (BitmapFactory. decodeStream (FS);} catch (FileNotFoundException e) {e. printStackTrace () ;}/ *** image object */class ImageBean {private String path; public String getPath () {return path;} public void setPath (String path) {this. path = path ;}}}
 

Main Learning Points: Set the image size and update the layout.