内存溢出outofmemery,用ViewPager出现内存溢出,求解答

ARy 2013-12-20 08:05:27
当滑动五六个Pager的时候,就会爆这个错误,ViewPager不是会自动销毁Pager的吗,怎么会内存溢出



package com.siyehuazhilian.nextday;



import java.io.FileOutputStream;

import java.io.OutputStream;

import java.text.DateFormat;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;



import android.app.Dialog;

import android.content.Intent;

import android.graphics.Bitmap;

import android.graphics.Bitmap.CompressFormat;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.view.ViewPager;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Toast;



import com.siyehuazhilian.control.ViewPagerAdapter;

import com.siyehuazhilian.fragment.ViewPagerAdatperFragment;



public class MainActivity extends FragmentActivity implements OnClickListener {

	// 从农历11月14日开始,就是12月16日

	private String startDate = "2013-11-20";

	// 得到今天的日期

	private String today = new SimpleDateFormat("yyyy-MM-dd")

			.format(new Date());

	// 当前选中的日期

	private String currentDay = today;



	// 声明ViewPager对象

	private ViewPager viewPager = null;

	// 声明ViewPager适配器

	private ViewPagerAdapter viewPagerAdapter = null;

	// viewPagerAdapter的数据

	private ArrayList<ViewPagerAdatperFragment> list;



	// 分享对话框

	private Dialog dialog;



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		viewPager = (ViewPager) findViewById(R.id.viewpager);

		list = new ArrayList<ViewPagerAdatperFragment>();

		viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager(),

				list);



		// 为ViewPager设置适配器

		viewPager.setAdapter(viewPagerAdapter);

	}



	@Override

	protected void onResume() {

		super.onResume();

		// 加载数据

		addViewPagerAdpaterData();

		viewPager.setCurrentItem(3);



	}



	/**

	 * 为适配器添加具体的数据

	 * 

	 * @throws ParseException

	 */

	private void addViewPagerAdpaterData() {

		try {

			ArrayList<Date> listDate = new ArrayList<Date>();

			DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

			int count = differenceDay(startDate, today);

			// 这个的适配器的每一项都是一个Fragment碎片,所以要新建一个碎片类来管理

			for (int i = 0; i < count; i++) {

				listDate.add(new Date(dateFormat.parse(today).getTime()

						- 1000 * 60 * 60 * 24 * i));

				list.add(ViewPagerAdatperFragment.newInstance(listDate.get(i)

						.toString().split(" ")));

			}



			viewPagerAdapter.notifyDataSetChanged();

		} catch (ParseException e) {

		}

	}



	/**

	 * 计算两个日期之间的天数差

	 * 

	 */

	private int differenceDay(String day1, String day2) {

		try {

			DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

			Date date1 = dateFormat.parse(day1);

			Date date2 = dateFormat.parse(day2);

			return (int) ((date2.getTime() - date1.getTime()) / 1000 / 60 / 60 / 24);

		} catch (ParseException e) {

			return -10086;

		}



	}



	@Override

	public boolean onPrepareOptionsMenu(Menu menu) {

		if (dialog == null) {

			dialog = new Dialog(this);

			dialog.setTitle("分享");

			dialog.show();

			View layout = getLayoutInflater().inflate(R.layout.share, null);

			dialog.setContentView(layout);

			layout.findViewById(R.id.imageview_qqshare)

					.setOnClickListener(this);

			layout.findViewById(R.id.imageview_weixinshare).setOnClickListener(

					this);

			layout.findViewById(R.id.imageview_weiboshare).setOnClickListener(

					this);

		} else {

			dialog.show();

		}

		return super.onPrepareOptionsMenu(menu);

	}



	@Override

	public void onClick(View v) {

		dialog.dismiss();

		shootScreen();

		Toast.makeText(

				this,

				"截屏成功,已保存至: " + Environment.getExternalStorageDirectory() + "/"

						+ currentDay + ".jpg", Toast.LENGTH_SHORT).show();

		switch (v.getId()) {

		case R.id.imageview_qqshare:



			break;

		case R.id.imageview_weixinshare:



			break;

		case R.id.imageview_weiboshare:

			Intent intent = new Intent(Intent.ACTION_SEND);



			// intent.setType("text/plain");

			intent.setType("image/jpeg");

			// intent.putExtra(Intent.EXTRA_SUBJECT, "分享");

			// intent.putExtra(Intent.EXTRA_TEXT,

			// "I would like to share this with you...");

			Uri uri = Uri.parse(Environment.getExternalStorageDirectory() + "/"

					+ currentDay + ".jpg");

			intent.putExtra(Intent.EXTRA_STREAM, uri);

			startActivity(intent);

			break;



		default:

			break;

		}

	}

	Bitmap bitmap1 = null;



	/**

	 * 截屏

	 */

	private void shootScreen() {

		View view = getWindow().getDecorView();

		view.setDrawingCacheEnabled(true);

		view.buildDrawingCache();

		Bitmap b1 = view.getDrawingCache();

		Bitmap bitmap = Bitmap.createBitmap(b1, 0, 0, b1.getWidth(),

				b1.getHeight());

		bitmap1 = bitmap;

		view.destroyDrawingCache();



		try {

			OutputStream outputStream = new FileOutputStream(

					Environment.getExternalStorageDirectory() + "/"

							+ currentDay + ".jpg");

			bitmap.compress(CompressFormat.PNG, 100, outputStream);

			outputStream.flush();

			outputStream.close();

		} catch (Exception e) {

			e.printStackTrace();

		}

	}

}





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ARy 2013-12-20
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package com.siyehuazhilian.fragment;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.reflect.Field;

import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.siyehuazhilian.nextday.R;
import com.siyehuazhilian.utils.DownRescoureces;

public class ViewPagerAdatperFragment extends Fragment {
	private View layoutinflater;
	// 背景图片
	private ImageView imageView;
	// 大字说明
	private TextView largeSize;
	// 小字说明
	private TextView smallSize;
	// 日期
	private TextView monthTextView, yearTextView, weekTextView, dateTextView;
	//
	private LinearLayout dateLayout, informationLayout;
	// 隐藏图片因子0表示放到最前面,隐藏其他的控件,1表示放到最后面,不隐藏其他的控件
	private int hideImage = 0;

	// 当前时间
	private String[] dateStr = new String[6];
	// 当前显示诗句
	private String[] textStr = new String[2];

	// 加载资源对象
	private DownRescoureces downRescoureces = new DownRescoureces();

	public static ViewPagerAdatperFragment newInstance(String[] dateStr) {
		ViewPagerAdatperFragment adatperFragment = new ViewPagerAdatperFragment();

		Bundle bundle = new Bundle();
		bundle.putString("week", dateStr[0]);
		bundle.putString("month", dateStr[1]);
		bundle.putString("day", dateStr[2]);
		bundle.putString("year", dateStr[5]);

		adatperFragment.setArguments(bundle);
		return adatperFragment;
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		layoutinflater = inflater.inflate(R.layout.pager_adapter_view, null);
		return layoutinflater;
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		dateLayout = (LinearLayout) layoutinflater
				.findViewById(R.id.linerlayout_date);
		informationLayout = (LinearLayout) layoutinflater
				.findViewById(R.id.linearlayout_information);
		imageView = (ImageView) layoutinflater
				.findViewById(R.id.imageview_image);
		largeSize = (TextView) layoutinflater
				.findViewById(R.id.textview_large_size);
		smallSize = (TextView) layoutinflater
				.findViewById(R.id.textview_small_size);
		monthTextView = (TextView) layoutinflater
				.findViewById(R.id.textiview_month);
		yearTextView = (TextView) layoutinflater
				.findViewById(R.id.textiview_year);
		weekTextView = (TextView) layoutinflater
				.findViewById(R.id.textiview_week);
		dateTextView = (TextView) layoutinflater
				.findViewById(R.id.textview_day);

		// 得到数据
		dateStr[0] = getArguments().getString("week");
		dateStr[1] = getArguments().getString("month");
		dateStr[2] = getArguments().getString("day");
		dateStr[5] = getArguments().getString("year");

		imageView.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				if (hideImage == 0) {
					Animation animation = new AlphaAnimation(1.0f, 0.0f);
					animation.setDuration(3000);
					dateLayout.startAnimation(animation);
					informationLayout.startAnimation(animation);
					dateLayout.setVisibility(View.GONE);
					informationLayout.setVisibility(View.GONE);
					hideImage++;
				} else {
					Animation animation = new AlphaAnimation(0.0f, 1.0f);
					animation.setDuration(3000);
					dateLayout.startAnimation(animation);
					informationLayout.startAnimation(animation);
					dateLayout.setVisibility(View.VISIBLE);
					informationLayout.setVisibility(View.VISIBLE);
					hideImage--;
				}
			}
		});

	}

	@Override
	public void onResume() {
		super.onResume();
		setText();
		setImage();
		setDate();
	}

	/**
	 * 设置Date
	 */
	private void setDate() {
		monthTextView.setText(dateStr[1]);
		yearTextView.setText(dateStr[5]);
		weekTextView.setText(dateStr[0]);
		dateTextView.setText(dateStr[2]);
	}

	/**
	 * 设置图片
	 */
	private void setImage() {
		int currentDay = Integer.parseInt(dateStr[2]);
		Field[] fields = R.drawable.class.getDeclaredFields();

		try {
			DisplayMetrics display = new DisplayMetrics();
			getActivity().getWindowManager().getDefaultDisplay()
					.getMetrics(display);
			int width = display.widthPixels;
			int height = display.heightPixels;
			imageView.setImageBitmap(optimizeBitmap(getResources(),
					fields[currentDay - 1].getInt(R.drawable.class), width,
					height));
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 读取图片
	 */
	public Bitmap optimizeBitmap(Resources resources, int drawableID,
			int maxWidth, int maxHeight) {
		Bitmap result = null;
		// 图片配置对象，该对象可以配置图片加载的像素获取个数
		BitmapFactory.Options options = new BitmapFactory.Options();
		// 表示加载图像的原始宽高
		options.inJustDecodeBounds = true;
		result = BitmapFactory.decodeResource(resources, drawableID, options);
		// Math.ceil表示获取与它最近的整数（向上取值 如：4.1->5 4.9->5）
		int widthRatio = (int) Math.ceil(options.outWidth / maxWidth);
		int heightRatio = (int) Math.ceil(options.outHeight / maxHeight);

		options.inSampleSize = 1;
		// 设置最终加载的像素比例，表示最终显示的像素个数为总个数的
		if (widthRatio > 1 || heightRatio > 1) {
			if (widthRatio > heightRatio) {
				options.inSampleSize = widthRatio;
			} else {
				options.inSampleSize = heightRatio;
			}
		}
		// 解码像素的模式，在该模式下可以直接按照options的配置取出像素点
		options.inJustDecodeBounds = false;
		result = BitmapFactory.decodeResource(resources, drawableID, options);
		return result;
	}

	/**
	 * 设置文字
	 * 
	 */
	private void setText() {
		try {
			InputStream inputStream = getResources().getAssets()
					.open("100.txt");
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(inputStream, "gb2312"));
			int currentDay = Integer.parseInt(dateStr[2]);
			String tmp = "";
			for (int i = 0; i < currentDay; i++) {
				tmp = bufferedReader.readLine();
			}
			textStr = tmp.split("-");
			largeSize.setText(textStr[1]);
			smallSize.setText(textStr[0]);
			smallSize.setSelected(true);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}
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