如何在Picasso中使用磁盤緩存？我正在使用畢加索(Picasso)在我的Android應用程序中顯示圖像：/**
* load image.This is within a activity so this context is activity
*/public void loadImage (){
Picasso picasso = Picasso.with(this);
picasso.setDebugging(true);
picasso.load(quiz.getImageUrl()).into(quizImage);}我已經啟用了調試，它總是顯示紅色和綠色，但從不顯示黃色現在，如果我加載相同的圖像，下次，互聯網是不可用的，圖像是不加載的。問題：它沒有本地磁盤緩存嗎？如何啟用磁盤緩存，因為我將多次使用相同的映像。是否需要向Android清單文件添加一些磁盤權限？
3 回答
臨摹微笑
TA貢獻1982條經驗 獲得超2個贊
compile 'com.squareup.picasso:picasso:2.5.2'compile 'com.squareup.okhttp3:okhttp:3.10.0'compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'
Application
import android.app.Application;import com.jakewharton.picasso.OkHttp3Downloader;import com.squareup.picasso.Picasso;public class Global extends Application {
@Override
public void onCreate() {
super.onCreate();
Picasso.Builder builder = new Picasso.Builder(this);
builder.downloader(new OkHttp3Downloader(this,Integer.MAX_VALUE));
Picasso built = builder.build();
built.setIndicatorsEnabled(true);
built.setLoggingEnabled(true);
Picasso.setSingletonInstance(built);
}}<application android:name=".Global" .. ></application>
編輯：
Picasso.with(this) .load(url) .networkPolicy(NetworkPolicy.OFFLINE) .into(imageView);
編輯#2
Picasso.with(getActivity()).load(imageUrl).networkPolicy(NetworkPolicy.OFFLINE).into(imageView, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError() {
//Try again online if cache failed
Picasso.with(getActivity())
.load(posts.get(position).getImageUrl())
.error(R.drawable.header)
.into(imageView, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError() {
Log.v("Picasso","Could not fetch image");
}
});
}});- 3 回答
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