本文實例講述了Android編程使用Intent傳遞圖片的方法。分享給大家供大家參考，具體如下：
基本思路是先把bitmap轉化為byte數組，用Intent傳遞數組，在將數組轉化為bitmap
bitmap轉化為byte數組的方法：
private byte[] Bitmap2Bytes(Bitmap bm){ ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray();}byte數組轉化為bitmap方法：
byte buff[]=mIntent.getByteArrayExtra("image");bitmap = BitmapFactory.decodeByteArray(buff, 0, buff.length);程序實例：
第一個activity：
import java.io.ByteArrayOutputStream;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;public class SendImageActivity extends Activity implements OnClickListener { /** Called when the activity is first created. */ private Bitmap bitmap; byte buff[] = new byte[125*250]; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageView mImageView = (ImageView) findViewById(R.id.image); Button bt1 = (Button) findViewById(R.id.bt1); bitmap =BitmapFactory.decodeResource(getResources(), R.drawable.option24); buff = Bitmap2Bytes(bitmap); BitmapDrawable mBitmapDrawable = new BitmapDrawable(bitmap); mImageView.setBackgroundDrawable(mBitmapDrawable); bt1.setOnClickListener(this); } @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent mIntent = new Intent(); mIntent.putExtra("image", buff); mIntent.setClass(this, activity2.class); startActivity(mIntent); } private byte[] Bitmap2Bytes(Bitmap bm){ ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); }}第二個activity：
import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.widget.Button;import android.widget.ImageView;public class activity2 extends Activity { private Bitmap bitmap; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.layout2); ImageView mImageView = (ImageView) findViewById(R.id.image2); Intent mIntent = getIntent(); byte buff[]=mIntent.getByteArrayExtra("image"); bitmap = BitmapFactory.decodeByteArray(buff, 0, buff.length); BitmapDrawable mBitmapDrawable = new BitmapDrawable(bitmap); mImageView.setBackgroundDrawable(mBitmapDrawable); }}發(fā)送圖片：
Intent intent = new Intent(ChangePortraitActivity.this , UserProfileActivity.class);mImageView.setDrawingCacheEnabled(Boolean.TRUE);intent.putExtra("BITMAP", mImageView.getDrawingCache()); //這里可以放一個bitmapstartActivity(intent);接收圖片：
//接收的activityIntent intent = getIntent();if (intent != null && intent.getParcelableExtra("BITMAP") != null) { Bitmap bitmap = (Bitmap)getIntent().getParcelableExtra("BITMAP"); mImageViewPortrait.setImageBitmap(bitmap);}希望本文所述對大家Android程序設計有所幫助。
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