我是Android的新手，所以请帮我完成任务。
问题：如何在SQLite中放置图片路径，当我重新启动应用时，会显示我从相机中拍摄的照片？
我想用文本将照片保存在数据库中，然后在重新启动应用程序时恢复图像视图中的图片，当我点击图像时，它会显示我在其上写的信息。
这是我的代码：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_layout1);
tabLayout = (TabLayout) findViewById(R.id.tablayout1);
tabLayout.addTab(tabLayout.newTab().setText("Tab1"));
tabLayout.addTab(tabLayout.newTab().setText("Tab2"));
tabLayout.addTab(tabLayout.newTab().setText("Tab3"));
tabLayout.setTabGravity(tabLayout.GRAVITY_FILL);
viewPager = (ViewPager) findViewById(R.id.viewpager1);
Pager adapter = new Pager(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
viewPager.setAdapter(adapter);
tabLayout.setOnTabSelectedListener(this);
viewPager.getCurrentItem();
viewPager.setOffscreenPageLimit(3);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab1);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position = tabLayout.getSelectedTabPosition();
switch (position) {
case 0:
File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
String pictureName = "image1" + ".jpg";
File imageFile = new File(file, pictureName);
Uri pictureUri = Uri.fromFile(imageFile);
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
startActivityForResult(i, 0);
break;
case 1:
File file2 = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
String pictureName2 = "image2" + ".jpg";
File imageFile2 = new File(file2, pictureName2);
Uri pictureUri2 = Uri.fromFile(imageFile2);
Intent ii = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
ii.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri2);
startActivityForResult(ii, 1);
break;
case 2:
File file3 = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
String pictureName3 = "image3" + ".jpg";
File imageFile3 = new File(file3, pictureName3);
Uri pictureUri3 = Uri.fromFile(imageFile3);
Intent iii = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
iii.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri3);
startActivityForResult(iii, 2);
break;
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
imageView1 = (ImageView) findViewById(R.id.img1);
imageView2 = (ImageView) findViewById(R.id.img2);
imageView3 = (ImageView) findViewById(R.id.img3);
if (requestCode == 0 && resultCode == RESULT_OK) {
String photoPath = Environment.getExternalStorageDirectory() + "/Download/image1.jpg";
galleryAddPic(photoPath);
Bitmap bitmap1 = BitmapFactory.decodeFile(photoPath);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
final Bitmap b = BitmapFactory.decodeFile(photoPath, options);
imageView1.setImageBitmap(b);
imageView1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
imageView1.buildDrawingCache();
Bitmap image = imageView1.getDrawingCache();
Bundle extras = new Bundle();
Intent o = new Intent(Layout1.this, Information.class);
extras.putParcelable("Bitmap", image);
o.putExtras(extras);
startActivity(o);
}
});
} else if (requestCode == 1 && resultCode == RESULT_OK) {
String photoPath = Environment.getExternalStorageDirectory() + "/Download/image2.jpg";
galleryAddPic(photoPath);
Bitmap bitmap2 = BitmapFactory.decodeFile(photoPath);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
final Bitmap b2 = BitmapFactory.decodeFile(photoPath, options);
imageView2.setImageBitmap(b2);
imageView2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
imageView2.buildDrawingCache();
Bitmap image = imageView2.getDrawingCache();
Bundle extras = new Bundle();
Intent o = new Intent(Layout1.this, Information.class);
extras.putParcelable("Bitmap", image);
o.putExtras(extras);
startActivity(o);
}
});
} else if (requestCode == 2 && resultCode == RESULT_OK) {
String photoPath = Environment.getExternalStorageDirectory() + "/Download/image3.jpg";
galleryAddPic(photoPath);
Bitmap bitmap3 = BitmapFactory.decodeFile(photoPath);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
final Bitmap b3 = BitmapFactory.decodeFile(photoPath, options);
imageView3.setImageBitmap(b3);
imageView3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
imageView3.buildDrawingCache();
Bitmap image = imageView3.getDrawingCache();
Bundle extras = new Bundle();
Intent o = new Intent(Layout1.this, Information.class);
extras.putParcelable("Bitmap", image);
o.putExtras(extras);
startActivity(o);
}
});
}
}
private void galleryAddPic(String photoPath) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(photoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
这是我的数据库类：
public class DataBaseHelper extends SQLiteOpenHelper {
public static final String DATABASE_NAME = "big.db";
public static final String TABLE_NAME = "images";
public static final String NAME = "name";
public static final String PLACE = "place";
public DataBaseHelper(Context context) {
super(context, DATABASE_NAME, null, 1);
SQLiteDatabase db = this.getWritableDatabase();
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_IMAGES_TABLE = "CREATE TABLE images ( " +
"id INTEGER PRIMARY KEY AUTOINCREMENT, " +
"name TEXT, " +
"place TEXT )";
db.execSQL(CREATE_IMAGES_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {
db.execSQL("DROP TABLE IF EXISTS images");
this.onCreate(db);
}
public void insertentry(String name, String place) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(NAME, name);
contentValues.put(PLACE, place);
contentValues.put(PLACE, place);
db.insert(TABLE_NAME, null, contentValues);
}}
这是从我的相机拍摄照片并将信息放入其中的信息类
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_information);
text1 = (EditText) findViewById(R.id.txt1);
text2 = (EditText) findViewById(R.id.txt2);
ImageView oo= (ImageView)findViewById(R.id.imageView99);
btn = (Button) findViewById(R.id.btn1);
Log.d("CLick", "123 INFO SAVED");
addData();
dataBaseHelper = new DataBaseHelper(this);
Bundle extras = getIntent().getExtras();
Bitmap bmp = (Bitmap) extras.getParcelable("Bitmap");
oo.setImageBitmap(bmp);
}
public void addData(){
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dataBaseHelper.insertentry(text1.getText().toString(),text2.getText().toString());
Toast.makeText(getApplicationContext(),"doneeeee",
Toast.LENGTH_LONG).show();
}
});
}