android 选择本地图片并预览

adv_sdcard_image_upload.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
? xmlns:android="http://schemas.android.com/apk/res/android"
? android:orientation="vertical"
? android:layout_width="match_parent"
? android:layout_height="match_parent" android:weightSum="1">
??? <TextView android:id="@+id/txtv_title" android:text="本地400电话图片添加" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content"></TextView>
??? <LinearLayout android:layout_height="wrap_content" android:id="@+id/linearLayout1" android:layout_width="fill_parent" android:gravity="center" android:layout_weight="0.29">
??????? <Button android:text="选择" android:id="@+id/adv_btn_xuanze"? android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
???????
??????? <Button android:text="提交" android:id="@+id/adv_btn_tijiao" android:layout_marginLeft="18dp" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
???????? <Button android:text="返回" android:id="@+id/adv_btn_fanhui" android:layout_marginLeft="18dp" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
??? </LinearLayout>
??? <LinearLayout android:layout_height="wrap_content" android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_weight="0.22">
??????? <TextView android:text="任务名称:" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
??????? <EditText android:layout_weight="1" android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/editText1">
??????????? <requestFocus></requestFocus>
??????? </EditText>
??? </LinearLayout>
??? <ImageView android:layout_gravity="center_horizontal" android:src="@drawable/clickbutttonstyle"
??? android:id="@+id/adv_img_show" android:layout_width="302dp" android:layout_height="284dp"></ImageView>
???
</LinearLayout>

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adv_sdcard_image_upload.java

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package adv.activity;

import java.io.FileNotFoundException;

import frame.hrxcCall.R;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class adv_sdcard_image_upload extends Activity {

??? @Override
??? protected void onCreate(Bundle savedInstanceState) {

??? ??? super.onCreate(savedInstanceState);

??? ??? setContentView(R.layout.adv_sdcard_image_upload);
??? ??? init();

??? }

??? /**
??? ?* 初始化方法 http://www.my400800.cn
??? ?*/
??? private void init() {
??? ??? // 事件注册start
??? ??? // 选择
??? ??? Button adv_btn_xuanze = (Button) findViewById(R.id.adv_btn_xuanze);
??? ??? // 提交
??? ??? Button adv_btn_tijiao = (Button) findViewById(R.id.adv_btn_tijiao);
??? ??? // 返回
??? ??? Button adv_btn_fanhui = (Button) findViewById(R.id.adv_btn_fanhui);

??? ??? // 返回按钮按下处理事件
??? ??? adv_btn_fanhui.setOnClickListener(new View.OnClickListener() {

??? ??? ??? @Override
??? ??? ??? public void onClick(View arg0) {
??? ??? ??? ??? finish();// 这个是关键

??? ??? ??? }
??? ??? });

??? ??? // 事件注册end
??? ??? adv_btn_xuanze.setOnClickListener(new View.OnClickListener() {

??? ??? ??? @Override
??? ??? ??? public void onClick(View arg0) {
??? ??? ??? ??? Intent intent = new Intent();
??? ??? ??? ??? /* 开启Pictures画面Type设定为image */
??? ??? ??? ??? intent.setType("image/*");
??? ??? ??? ??? /* 使用Intent.ACTION_GET_CONTENT这个Action */
??? ??? ??? ??? intent.setAction(Intent.ACTION_GET_CONTENT);
??? ??? ??? ??? /* 取得相片后返回本画面 */
??? ??? ??? ??? startActivityForResult(intent, 1);

??? ??? ??? }
??? ??? });

??? ??? // /* 开启Pictures画面Type设定为image */
??? ??? // intent.setType("image/*");
??? ??? // /* 使用Intent.ACTION_GET_CONTENT这个Action */
??? ??? // intent.setAction(Intent.ACTION_GET_CONTENT);
??? ??? // /* 取得相片后返回本画面 */
??? ??? // startActivityForResult(intent, 1);
??? }
???
??? /**
??? ?* 文件选取完成回调函数
??? ?*/
??? @Override
??? protected void onActivityResult(int requestCode, int resultCode, Intent data) {
??????? if (resultCode == RESULT_OK) {
??????????? Uri uri = data.getData();
??????????? Log.e("uri", uri.toString());
??????????? ContentResolver cr = this.getContentResolver();
??????????? try {
??????????????? Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));
??????????????? ImageView adv_img_show = (ImageView) findViewById(R.id.adv_img_show);
??????????????? /* 将Bitmap设定到ImageView */
??????????????? adv_img_show.setImageBitmap(bitmap);
??????????? } catch (FileNotFoundException e) {
??????????????? Log.e("Exception", e.getMessage(),e);
??????????????? Toast.makeText(getApplicationContext(), "选择文件没有发现", Toast.LENGTH_LONG).show();
??????????? }
??????? }
??????? super.onActivityResult(requestCode, resultCode, data);?
??? }

}

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效果：

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