我有一个包含字符串的sharedPreference类。在每个字符串中都有一个十进制数字。我想将它们全部带到另一个活动的条目数组列表中。我怎样才能做到这一点? 感谢。
首先是Sharedpreferences类:
public class Prefs extends PreferenceActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SharedPreferences prefs=PreferenceManager.getDefaultSharedPreferences(this);
//about 30 Strings
String w1 = prefs.getString("w1", "");
String w2 = prefs.getString("w2", "");
String w3 = prefs.getString("w3", "");
String w4 = prefs.getString("w4", "");
String w5 = prefs.getString("w5", "");
String w6 = prefs.getString("w6", "");
这是第二项活动的一部分
private LineData generateLineData() {
//Introduce the Array list which we made as entries
ArrayList<Entry> entries = new ArrayList<Entry>();
LineDataSet set = new LineDataSet(entries, "data series");
set.setColor(Color.rgb(240, 238, 70));
set.setLineWidth(2.5f);
set.setCircleColor(Color.rgb(240, 238, 70));
set.setCircleSize(5f);
set.setFillColor(Color.rgb(240, 238, 70));
set.setDrawCubic(true);
set.setDrawValues(true);
set.setValueTextSize(10f);
set.setValueTextColor(Color.rgb(240, 238, 70));
以下是原始源代码:
package com.xxmassdeveloper.mpchartexample;
public class CombinedChartActivity extends DemoBase {
private CombinedChart mChart;
private final int itemcount = 12;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_combined);
mChart = (CombinedChart) findViewById(R.id.chart1);
mChart.setDescription("");
mChart.setBackgroundColor(Color.WHITE);
mChart.setDrawGridBackground(false);
mChart.setDrawBarShadow(false);
// draw bars behind lines
mChart.setDrawOrder(new DrawOrder[] {
DrawOrder.BAR, DrawOrder.BUBBLE, DrawOrder.CANDLE, DrawOrder.LINE, DrawOrder.SCATTER
});
YAxis rightAxis = mChart.getAxisRight();
rightAxis.setDrawGridLines(false);
YAxis leftAxis = mChart.getAxisLeft();
leftAxis.setDrawGridLines(false);
XAxis xAxis = mChart.getXAxis();
xAxis.setPosition(XAxisPosition.BOTH_SIDED);
CombinedData data = new CombinedData(mMonths);
data.setData(generateLineData());
data.setData(generateBarData());
// data.setData(generateBubbleData());
// data.setData(generateScatterData());
// data.setData(generateCandleData());
mChart.setData(data);
mChart.invalidate();
}
private LineData generateLineData() {
LineData d = new LineData();
ArrayList<Entry> entries = new ArrayList<Entry>();
for (int index = 0; index < itemcount; index++)
entries.add(new Entry(getRandom(15, 10), index));
LineDataSet set = new LineDataSet(entries, "Line DataSet");
set.setColor(Color.rgb(240, 238, 70));
set.setLineWidth(2.5f);
set.setCircleColor(Color.rgb(240, 238, 70));
set.setCircleSize(5f);
set.setFillColor(Color.rgb(240, 238, 70));
set.setDrawCubic(true);
set.setDrawValues(true);
set.setValueTextSize(10f);
set.setValueTextColor(Color.rgb(240, 238, 70));
set.setAxisDependency(YAxis.AxisDependency.LEFT);
d.addDataSet(set);
return d;
}
private BarData generateBarData() {
BarData d = new BarData();
ArrayList<BarEntry> entries = new ArrayList<BarEntry>();
for (int index = 0; index < itemcount; index++)
entries.add(new BarEntry(getRandom(15, 30), index));
BarDataSet set = new BarDataSet(entries, "Bar DataSet");
set.setColor(Color.rgb(60, 220, 78));
set.setValueTextColor(Color.rgb(60, 220, 78));
set.setValueTextSize(10f);
d.addDataSet(set);
set.setAxisDependency(YAxis.AxisDependency.LEFT);
return d;
}
protected ScatterData generateScatterData() {
ScatterData d = new ScatterData();
ArrayList<Entry> entries = new ArrayList<Entry>();
for (int index = 0; index < itemcount; index++)
entries.add(new Entry(getRandom(20, 15), index));
ScatterDataSet set = new ScatterDataSet(entries, "Scatter DataSet");
set.setColor(Color.GREEN);
set.setScatterShapeSize(7.5f);
set.setDrawValues(false);
set.setValueTextSize(10f);
d.addDataSet(set);
return d;
}
protected CandleData generateCandleData() {
CandleData d = new CandleData();
ArrayList<CandleEntry> entries = new ArrayList<CandleEntry>();
for (int index = 0; index < itemcount; index++)
entries.add(new CandleEntry(index, 20f, 10f, 13f, 17f));
CandleDataSet set = new CandleDataSet(entries, "Candle DataSet");
set.setColor(Color.rgb(80, 80, 80));
set.setBodySpace(0.3f);
set.setValueTextSize(10f);
set.setDrawValues(false);
d.addDataSet(set);
return d;
}
protected BubbleData generateBubbleData() {
BubbleData bd = new BubbleData();
ArrayList<BubbleEntry> entries = new ArrayList<BubbleEntry>();
for (int index = 0; index < itemcount; index++) {
float rnd = getRandom(20, 30);
entries.add(new BubbleEntry(index, rnd, rnd));
}
BubbleDataSet set = new BubbleDataSet(entries, "Bubble DataSet");
set.setColors(ColorTemplate.VORDIPLOM_COLORS);
set.setValueTextSize(10f);
set.setValueTextColor(Color.WHITE);
set.setHighlightCircleWidth(1.5f);
set.setDrawValues(true);
bd.addDataSet(set);
return bd;
}
private float getRandom(float range, float startsfrom) {
return (float) (Math.random() * range) + startsfrom;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.combined, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.actionToggleLineValues: {
for (DataSet<?> set : mChart.getData().getDataSets()) {
if (set instanceof LineDataSet)
set.setDrawValues(!set.isDrawValuesEnabled());
}
mChart.invalidate();
break;
}
case R.id.actionToggleBarValues: {
for (DataSet<?> set : mChart.getData().getDataSets()) {
if (set instanceof BarDataSet)
set.setDrawValues(!set.isDrawValuesEnabled());
}
mChart.invalidate();
break;
}
}
return true;
}
}
答案 0 :(得分:0)
如果你的sharedprefernce
键在w1,w2 .... w30序列中,那么
活动#1
ArrayList<String> list=new ArryList<String>();
for(int i=1;i<=30;i++){
list.add(prefs.getString("w"+i, ""));
}
Intent intent=new Intent(this,SecondActivity.class);
intent.putExtra("list_data",list);
startActivity(intent);
活动#2
ArrayList<String> entries = ArrayList<String>)getIntent().getExtras("list_data");
LineDataSet set = new LineDataSet(entries, "data series");