activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/rl" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="10dp" tools:context=".MainActivity" android:background="#ddebbe" > <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Convert Bitmap To Drawable" /> <ImageView android:id="@+id/iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/btn" /> </RelativeLayout> MainActivity.java
package com.cfsuman.me.androidcodesnippets; import android.app.ActionBar; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.Toast; import android.graphics.Bitmap; import android.graphics.drawable.Drawable; import java.io.InputStream; import android.graphics.BitmapFactory; import java.io.IOException; public class MainActivity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout simpulan RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl); simpulan Button btn = (Button) findViewById(R.id.btn); simpulan ImageView iv = (ImageView) findViewById(R.id.iv); simpulan ActionBar ab = getActionBar(); ab.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#FFEB1491"))); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Try to convert an asset image to a drawable object try{ InputStream is = getAssets().open("animals.png"); Bitmap bitmap = BitmapFactory.decodeStream(is); Drawable drawable = ConvertBitmapToDrawable(bitmap); // Set the ImageView image from drawable iv.setImageDrawable(drawable); } catch(IOException e) // Catch the exception { e.printStackTrace(); } // Notify the user that bitmap converted to drawable Toast.makeText(getApplicationContext(), "Drawable created.",Toast.LENGTH_SHORT).show(); } }); } // Custom method to convert bitmap to drawable public Drawable ConvertBitmapToDrawable(Bitmap bitmap) { /* Drawable A Drawable is a general abstraction for "something that can be drawn." Most often you will deal with Drawable as the type of resource retrieved for drawing things to the screen; the Drawable class provides a generic API for dealing with an underlying visual resource that may take a variety of forms. Unlike a View, a Drawable does not have any facility to receive events or otherwise interact with the user. */ /* BitmapDrawable A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. You can create a BitmapDrawable from a file path, an input stream, through XML inflation, or from a Bitmap object. */ /* public abstract Resources getResources () Return a Resources instance for your application's package. */ Drawable drawable = new BitmapDrawable(getResources(),bitmap); return drawable; } }
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